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July 23, 2014

# Search: How much energy is needed to ionize a hydrogen atom in the n = 5 state

Number of results: 40,489

chem
How much energy is required to ionize a hydrogen atom in its ground (or lowest energy) state? What wavelength of light contains enough energy in a single photon to ionize a hydrogen atom?
October 27, 2008 by natash

chem
According to the Bohr theory of the hydrogen atom, what is the minimum energy (in J) needed to ionize a hydrogen atom from the n = 2 state?
September 5, 2010 by ryan

college chemistry
According to the Bohr theory of the hydrogen atom, what is the minimum energy (in J) needed to ionize a hydrogen atom from the n = 2 state?
September 5, 2010 by ryan

Chemistry
Calculate the energy, in joules required to ionize a hydrogen atom when its electron is initially in the n=2 energy level.
October 22, 2011 by Anonymous

Physics
Q: From the Bohr model of the Hydrogen atom, calculate the minimum amount of energy (in eV) an electron in the lowest orbital would need to free it from its proton (i.e., to ionize the atom). A: would I use the equation: En = - 13.6 / (n^2) ? If so, an an electron in its ...
May 26, 2009 by Tracey

Physics
What wavelength photon would be required to ionize a hydrogen atom in the ground state and give the ejected electron a kinetic energy of 13.1 eV? I tried ryhdberg's equation and E=hf. Need help. Thanks
March 24, 2008 by Samantha Farha

Ap Chemistry
HOw much energy is required to ionize a mole of Hydrogen atoms?
September 8, 2011 by Ivy

Chemistry
1.) The average velocity of Cl(2) molecules is 2.50 x 10^3 m/sec at a temp of 25 C therefore the average velocity of helium atoms is ?? [ i got the answer 5.94 x 10^2 m/Sec is that right] 2.) A gas is allowed to expand from 1.5 : to 12.5 L against a constant pressure of 6.5 ...
March 29, 2009 by Emmanuel

physics
there is a figure that looks kind of like this: E6--------------------- E= -0.378eV E5--------------------- E= -0.544eV E4--------------------- E= -0.850eV E3--------------------- E= -1.51eV E2--------------------- E= -3.40eV the figure shown above shows the enrgy levels for a...
March 14, 2009 by physics

Atomic physics
1)Five possible transitions for a hydrogen atom are listed below: Select whether the atom gains or loses energy for each transition. a. Loses Gains ni = 6; nf = 4 Loses Gains ni = 4; nf = 2 Loses Gains ni = 5; nf = 3 Loses Gains ni = 2; nf = 5 Loses Gains ni = 5; nf = 7 b. ...
April 13, 2008 by Sandhya

Quantum Physics
What is the maximum value of the wavelength of light that will ionize the hydrogen atom? Express your answer in units of nanometers.
April 22, 2013 by qwerty

chem 115
The first ionization energy is the energy necessary to completely remove the outermost electron from an atom. For a Hydrogen atom this energy is 2.18 X 10^-18J. If you were to use a laser to provide this energy, what is the wavelength (in nm) of the light emitted from the laser?
September 23, 2010 by Kelsey

Physics
The higher the energy level occupied by an electron in the hydrogen atom, the larger the atom. The diameter of the atom is proportional to n^2, where n=1 labels the lowest or "ground" state, n=3 is the thrid state, and so on. If the atom's diameter is 1 x 10^(-10)m in its ...
November 16, 2009 by Lauren

physics
The higher the energy level occupied by an electron in the hydrogen atom, the larger the atom. The diameter of the atom is proportional to n2, where n=1 labels the lowest, or “ground” state, n=3 is the third state, and so on. If the atom’s diameter is 1x10-10m in its lowest ...
November 6, 2007 by Will

Physics
The higher the energy level occupied by an electron in the hydrogen atom, the larger the atom. The diameter of the atom is proportional to n2, where n=1 labels the lowest or “ground” state, n=3 is the third state, and so on. If the atom’s diameter is 1x10-10m in its lowest ...
July 1, 2010 by Richard

Physics
Could someone help me with these questions. . . please 1. How does Rutherford’s model of the atom account for the back – scattering of alpha particles directed at the gold leaf 2. The higher the energy level occupied by an electron in the hydrogen atom, the larger the atom. ...
November 12, 2007 by Mike

physics
The higher the energy level occupied by an electron in the hydrogen atom, the larger the atom. The diameter of the atom is proportional to n2, where n = 1 labels the lowest, or "ground" state, n = 2 is the second state, n = 3 is the third state, and so on. If the atom's ...
August 4, 2011 by stacy

chemistry
help needed in drawing the diagram to show how hydrogen has numerous spectral lines I also need help with this question.... ---------------- ---------------- ---------------- ---------------- ---------------- -------------------- Each line above represents an energy level for ...
February 6, 2007 by ruby

College Chemistry
In energy terms, ionization of an electron in an atom corresponds to the transition from whatever quantum state the electron is in to an energy of 0 KJ/mole. Calculate the energy in joules needed to remove one electron in the n=1 state from a hydrogen atom. I know En of 1 = -...
April 28, 2010 by Bach

Physics
Can someone help me with this, i have started it but cant get it to work out. The higher the energy level occupied by an electron in the hydrogen atom, the larger the atom. The diameter of the atom is proportional to n2, where n=1 labels the lowest, or “ground” state, n=3 is ...
November 10, 2007 by Aaron

Chemistry
Astronomers have detected hydrogen atoms in interstellar space in the n=732 energy level. Suppose an atom in this excited state emits of a photon and undergoes a transition from n=732 to n=632. How much energy does the atom lose as a result of this transition? what is the ...
November 29, 2012 by Carice

chemistry
the ground stste energy of H- atom is -13.6 eV. the energy needed to ionise H- atom from its second excited state is 1.51 eV 3.4 eV 13.6 eV 12.1 eV
January 19, 2009 by hriday

chemistry
The first ionization energy of a carbon atom is 1.81 aJ. What is the frequency and wavelength, in nanometers, of photons capable of just ionizing carbon atoms? v=______s^(-1) lambda =_____nm Assuming an ionization efficiency of 47.0%, how many such photons are needed to ionize...
April 2, 2013 by Anonymous

chemistry
The first ionization energy of a carbon atom is 1.81 aJ. What is the frequency and wavelength, in nanometers, of photons capable of just ionizing carbon atoms? v=______s^(-1) lambda =_____nm Assuming an ionization efficiency of 47.0%, how many such photons are needed to ionize...
April 2, 2013 by Anonymous

chemistry
Hi there, I need a little help starting this one. Calculate the energy in joules needed to remove one electron in the n=1 state from a hydrogen atom. I feel like i should apply the wavelength = Nhc/deltaE but I have no idea how to apply this to hydrogen. I appreciate your time!
July 22, 2008 by delany

apcehmistry
A thin metal sheet is composed of Fe and Co How do you ionize Fe to Fe2+ but not ionize Co ? I tiried using the activity series of metals, but Fe is above Co, so anything that would ionize Fe would also ionize Co right? So what JUST ionizes Fe but not Co? Thaak you
March 30, 2010 by Kiki

College Chemistry
I have no idea how to do this problem, and I've been searching through my book for an hour. Help please? An energy of 2.0x10^2 kJ/mol is required to cause a cesium atom on a metal surface to lose an electron. Calculate the longest possible wavelength of light that can ionize a...
October 16, 2011 by Mikaela

chemistry
(a)how much energy in KJ/mol is released when an electron makes a transition from n=5 to n=2 in a hydrogen atom?
May 22, 2013 by hardi

chemistry
The first ionization energy of a hydrogen atom is 2.18 aJ. Assuming the ionization efficiency is 82%, how many such photons are needed to 1.00 * 10^16 atoms?
October 6, 2012 by gine

Chemistry
Ionization energy is defined as the minimum energy required to remove an electron from the ground state (n0) to infinity (n∞). Determine the wavelength of radiation required to ionize the hydrogen electron from the n = 2 energy level. Calculate the energy (Joules) ...
October 26, 2009 by Sarah

chemistry
Select all substances with an acceptor atom that can hydrogen bond to a hydrogen atom that is part of a polar covalent bond. I2 diiodine HI hydrogen iodide KrF4 krypton tetrafluoride O2 dioxygen C6H6 benzene HCl hydrogen chloride None
January 22, 2010 by Angel

physics
In the Sun, an ionized helium atom makes a transition from n =6 state to the n = 2 state, emitting a photon. Can that photon be absorbed by hydrogen atoms present in the Sun? If so between what energy states will the hydrogen atom jump?
April 19, 2011 by qwer

chemistry
When will hydrogen bonding occur?Give an example of liquid other than H2O in which this type of force is important. In order for a hydrogen bond to occur there must be both a hydrogen donor and an acceptor present. The donor in a hydrogen bond is the atom to which the hydrogen...
October 5, 2012 by tracy

Chemistry
Please help i don't get the answer. How much energy, in kilojoules per mole, is released when an electron makes a transition from n=5 to n=2 in an hydrogen atom?
November 1, 2011 by Lorry

Chem
It is possible to determine the ionization energy for hydrogen using the Bohr equation. Calculate the ionization energy for an atom of hydrogen, making the assumption that ionization is the transition from n=1 to n=infinity. I don't know how to solve this problem. A. -2.18 x ...
March 6, 2014 by Jeimmy Vinueza

Physics
A hydrogen atom is in its third excited state (n=4). Using Bohr theory of the atom calculate (a) the radius of the orbit, (b) the linear momentum of the electron, (c) the angular momentum of the electron (d) the kinetic energy (e) the potential energy, and (f) the total energy...
April 28, 2012 by Chi

physics
Please help me answer the question below and also show equations and steps of how you came to your answer. Thank you 1. The electron in a hydrogen tom is in the first excited state, when the electron acquires an additional 2.86eV of energy. What is the quantum number n of the ...
September 10, 2008 by jennifer

Physics
Please help me answer the question below and also show equations and steps of how you came to your answer. Thank you 1. The electron in a hydrogen tom is in the first excited state, when the electron acquires an additional 2.86eV of energy. What is the quantum number n of the ...
September 11, 2008 by Jenny

chem
what occurs when an atom of clorine and an atom of hydrogen become a molecule of hydrogen chloride? a a chemical bond is broken and energy is released b a chemical bond is formed and energy is absorbed c a chemical bond is formed and energry is released d a chemical bond is ...
May 17, 2007 by Katie

Chemistry
It is possible to determine the ionization energy for hydrogen using the Bohr equation. Calculate the ionization energy for an atom of hydrogen, making the assumption that ionization is the transition from n=1 to n=infinity. I don't know how to solve this problem. A. -2.18 x ...
November 28, 2011 by A.J. Cooper

chem
What are the similarities and differences between the hydrogen atom 2s and 3s orbitals? a) What are the similarities and differences between the hydrogen atom 2s and 3s orbitals? b) What are the similarities and differences between the 2s orbital and a 2p orbital? c) For the ...
August 17, 2010 by gabyj

Physics
In which region of the electromagnetic spectrum do we find the energy to fully ionize hydrogen? A) Radio B) Infrared C) Visible D) Ultra-violet E) X-ray I want to know how you would go about doing this question; I know we need to find the wavelength, but what exactly is the ...
April 22, 2010 by Hannah

chemistry
Determine the ionization energy of a hydrogen atom (in kJ/mol) if the electron is in its ground state. (Hints: Use the Rydberg equation, remember E=hc for a single H atom, and R=109678x10–2nm )
April 10, 2008 by Un

chemistry
Determine the ionization energy of a hydrogen atom (in kJ/mol) if the electron is in its ground state. (Hints: Use the Rydberg equation, remember E=hc for a single H atom, and R=109678x10–2nm–1 )
January 17, 2010 by Tasha

Chemistry
a.) Caculate the energy of light emitted when an electron moves from n=2 to n=1 in the hydrogen atom. b.) Caculate the energy of light emitted when an electron moves from n=4 to n=2 in the hydrogen atom. c.) How many total different light energies can be emitted from an ...
January 19, 2013 by Brenda

Chemistry
A line in the Lyman series of the hydrogen atom emission results from the transition of an electron from the n=3 level to the ground state level. a) What n level (#) is the ground state level for the hydrogen atom? b) What is the energy of this photon in Joules?
July 17, 2011 by Ashley

Chemistry
An electron jumps from energy level 1 to energy level 2 by absorbing a photon of energy 8 eV. What is the most likely energy of the photon that will be emitted by the electron when it moves back down to energy level 1? 2 ev 4 ev 8 ev 12 ev What is the best description of the ...
October 31, 2013 by bigurl1.4

physics
The electron in a hydrogen atom with an energy of -0.544 eV is in a subshell with 18 states. What is the principal quantum number, n, for this atom? What is the maximum possible orbital angular momentum this atom can have? Is the number of states in the subshell with the next ...
April 12, 2012 by jazz

Physics
The allowed orbits for the electron around the nucleus of the hydrogen atom are explained by de Broglie as ... a. Quantized values for the total energy of the electron in the atom b. Quantized values for the angular momentum of the electron in the atom c. Standing waves for ...
April 4, 2010 by Sandra

physics
The nucleus of a hydrogen atom is a single proton, which has a radius of about 1.0 10-15 m. The single electron in a hydrogen atom normally orbits the nucleus at a distance of 5.3 10-11 m. What is the ratio of the density of the hydrogen nucleus to the density of the complete ...
December 1, 2006 by MIke

Chemistry
25.9 kJ + 1/2 H2 + 1/2 I2 -> HI B) how much energy is needed for the reaction of 4.57E24 molecules of iodine, I2, with excess hydrogen, H2? How does the "excess" hydrogen come into play? I mean, what's the significance of having excess H2 and how do I figure out the answer ...
February 6, 2013 by A Canadian

Chemistry
i dont understand this paragraph, can anyone explain it to me? If a large amount of energy is needed to remove an electron from an atom, the arrangement of electrons in that atom is considered to be especially stable. Thus, a high first ionization energy must be supplied to ...
March 5, 2008 by johnny

Chemistry
I dont understand this paragraph, can anyone explain it to me? If a large amount of energy is needed to remove an electron from an atom, the arrangement of electrons in that atom is considered to be especially stable. Thus, a high first ionization energy must be supplied to ...
March 5, 2008 by johnny

Physics
A hydrogen atom initially in its ground state (n = 1) absorbs a photon and ends up in the state for which n = 3. What is the energy of the absorbed photon? *I found the energy of the atom at the ground state and at n = 3. I subtracted the final from the initial to get a value ...
April 19, 2011 by Joe

Chemistry
Determine the final end (final) value of n in a hydrogen atom transition, if electron starts in n = 1 and the atom absorbs a photon of light with an energy of 2.044 X 10^-18J? A) 3 B) 4 C) 2 D) 6 E) 5
November 28, 2011 by Nancy

Chemistry
Calculate the wavelength of light emitted when each of the following transitions occur in the hydrogen atom. (a) n = 5 n = 4 _________nm (b) n = 5 n = 3 _____________ nm (c) n = 5 n = 2 __________ nm Calculate the maximum wavelength of light capable of removing an electron for...
October 20, 2008 by Giznelbell

Chemistry
given: 25.9 kJ + 1/2 H2 + 1/2 I2 => HI how much energy is needed for the reaction of 4.57x10^24 molecules of iodine, I2, with excess hydrogen, H2?
December 18, 2012 by Zack

Chemistry
A line in the Lyman series of the hydrogen atom emission results from the transition of an electron from the n=3 level to the ground state level. a) What n level (#) is the ground state level for the hydrogen atom? b) What is the energy of this photon in Joules? c) What is the...
July 18, 2011 by Ashley

Physics Help Requested!
QUESTION What is the change in energy of the hydrogen atom as the electron makes the transition from the n=3 energy level to the n=1 energy level? ANSWER xxx eV
April 26, 2008 by Chelsea

Chemistry
What minimum frequency of light is required to ionize potassium?The energy required to ionize potassium is 419kJ/mol?
September 18, 2010 by Ashley

chemestry
What is the energy of the photon emitted when the electron in a hydrogen atom drops from energy level E5 to energy level E2?
July 12, 2014 by christine

Chemistry Lab
Determine the ionization energy of a hydrogen atom (in kJ/mol) if the electron is in its ground state. (Hints: Use the Rydberg equation, remember E=hc for a single H atom, and R=109678x10–2nm–1 ) _____ kJ/mol Thanks :)
January 17, 2011 by Shawn Tabrizi

physics
In ammonia (NH3) molecule, the three hydrogen atoms form an equilateral triangle, the distance between the centers of the atoms being 16.28x10^-11 m, so that the center of the triangle is 9.40x10^-11 m from each hydrogen atom. The nitrogen atom is at the apex of the pyramis, ...
October 10, 2011 by Brianna

Chemistry
Find the equation that describes the energy of a photon emitted as an electron relaxes from a higher energy level to a lower one in a hydrogen atom. 6 to 1 6 to 2 6 to 3 6 to 4 6 to 5 5 to 1 5 to 2 5 to 3 5 to 4 4 to 1
April 18, 2011 by Toni Jones

Physics-Astronomy
Hello, I have no idea how to do the following question. Any help would be appreciated: An energy of at least 13.6 electron-volts is required to ionise a hydrogen atom. What is the longest wavelength of electromagnetic wave capable of ionising hydrogen? And which regions of the...
November 16, 2009 by Mark

Physics
Find the energy (in joules) of the photon that is emitted when the electron in a hydrogen atom undergoes a transition from the n=7 energy level to produce a line in the Paschen series.
September 11, 2008 by Jenny

Chemisty
For an electron in a hydrogen atom, the z component of the angular momentum has a maximum value of Lz = 4.22 x 10-34 J·s. Find the smallest possible value (algebraically) for the total energy (in electron volts) that this atom could have
July 29, 2012 by Beth

physics
The nucleus of a hydrogen atom is a single proton, which has a radius of about 1.0 10-15 m. The single electron in a hydrogen atom normally orbits the nucleus at a distance of 5.3 10-11 m. What is the ratio of the density of the hydrogen nucleus to the density of the complete ...
December 1, 2006 by MIke

Physics
What is the energy of a hydrogen atom with a 1.70 nm diameter?
April 25, 2010 by MK

Chemistry
which atom has the least attraction for the electrons in a bond between that atom and an atom of hydrogen? (1) carbon (2)nitrogen (3)oxygen (4) fluorine
December 1, 2010 by Anonymous

Chemistry
What is the energy of an electron in the 2s orbital of a hydrogen atom?
February 9, 2009 by Zack

physics
A hydrogen atom is in the 4p state. Determine its energy.
December 8, 2011 by Paige

Chemistry
What wavelength of light would be emitted when an electron in a hydrogen atom drops from energy level 5 to energy level 1?
November 2, 2010 by Shayne

Physics
What is the wavelength of light (in nanometers, nm) emitted when the electron in a hydrogen atom moves from the n=5 energy level to the n=3 energy level?
March 25, 2012 by Morgan

Chemistry
An atom emits a photon of light with a wavelength of 566 nanometers. How much energy has the atom lost? Answer in units of Joules.
July 14, 2010 by Ally

chemistry
Consider the following reaction: 2H2 (g) + O2 (g)  2H2O (l) ΔH = -572 kJ a. How much heat is evolved for the production of 1.00 mol H2O (l)? b. How much heat is evolved when 4.03 g hydrogen is reacted with excess oxygen? c. How much heat is evolved when 186 g ...
November 9, 2012 by Anonymous

Hydrogen
Why does a hydrogen atom, which has only one electron, have so many spectral lines? Any help gratefully recieved. There are many energy levels the one electron can transition from/to.
February 4, 2007 by Mac

Chemistry
24. A quantum is a finite amount of energy gained or lost by an atom.- F? 25. An atom is in an excited state when it has its lowest energy.- F 26. The Bohr model of the atom shows electrons in areas called energy levels.- F? 27. The principal quantum number indicates the main ...
October 21, 2010 by mysterychicken

Physics
The energy of the nth excited state of a hydrogen atom is proportional to 100 - (100/n2). 1) Using this formula, calculate the energy of the first five energy states. 2) How many spectral lines are possible for the transition of a photon in the n= 5 state to ground?
April 14, 2008 by CGUFF

CHEMISTRY
Select all substances with a hydrogen atom that would participate in hydrogen bonding with an appropriate acceptor atom. (CH3)2CO acetone CO carbon monoxide S8 octasulfur CHClCHCl cis-1,2-dichloroethene CF3CF3 hexafluoroethane CH3COCH3CH2 methylethylketone
January 24, 2009 by chris

CHEMISTRY
Select all substances with a hydrogen atom that would participate in hydrogen bonding with an appropriate acceptor atom. (CH3)2CO(acetone), CO(carbon monoxide), S8(octasulfur), CHClCHCl (cis-1,2-dichloroethene),CF3CF3(hexafluoroethane),CH3COCH3CH2 (methylethylketone)
January 24, 2009 by chris

physics
In Bohr's model of the hydrogen atom, the radius of an orbit a. is proportional to n2. b. is smallest for the highest energy state. c. increases when a photon of light is emitted from an excited atom. d. can have any value that is larger than the ground-state radius. e. none ...
August 15, 2009 by jeff

Physics-potential energy
In a classic model, the electron of a hydrogen atom circles the proton at a radius of 0.0529·10−9m when it is in the n=1 state. What is its electric potential energy?
November 3, 2010 by Kristy

Zoology
Can you rank these from the smallest to the largest? Heart carbon atom sodium atom electron nucleotide tundra mitochondria glucose molecule fungal cell hydrogen atom
August 29, 2010 by Marcus

CHEM
The electron from a hydrogen atom drops from an excited state into the ground state. When an electron drops into a lower-energy orbital, energy is released in the form of electromagnetic radiation. Part A: How much energy does the electron have initially in the n=4 excited ...
November 4, 2007 by K

physics
If an oxygen atom is 16 times more massive than an hydrogen atom, how much more massive is the "amount" of oxygen separated from any amount of water than the "amount" of hydrogen?
December 19, 2013 by Anonymous

Chemistry
The sizes and shapes of the hydrogen atom orbitals was revealed through graphical analysis of the corresponding wave functions. These wave functions also predict areas that the electrons have a zero probability of being found. These areas are known as nodes. Nodes in the ...
April 2, 2013 by anonymous

Atomic physics
5)a. Electrons accelerated by a potential difference of 12.23 V pass through a gas of hydrogen atoms at room temperature. Calculate the wavelength of light emitted with the longest possible wavelength. b. Calculate the wavelength of light emitted with the shortest possible ...
April 14, 2008 by Sandhya

Chemistry
Chemical analysis of a gas shows that it contains one carbon atom for every one hydrogen atom. The densiry ofthis gas is 1.161 g/l at STP. What is the minimus oxygen volume needed at STP for the complete combustion of .500 mol of this gas?
October 25, 2010 by Taylor

chemistry
The electron from a hydrogen atom drops from an excited state into the ground state. When an electron drops into a lower-energy orbital, energy is released in the form of electromagnetic radiation. Part A: How much energy does the electron have initially in the n=4 excited ...
October 25, 2010 by sam

Physics
In a hydrogen atom, if the radius of the orbit of the electron is doubled, then its energy will ... >> Increase by a factor of 2??
April 4, 2010 by Kat

chemistry
calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n=5 to n=1 how do I do this?
November 21, 2010 by Lisa

Chemistry
How can I calculate the energy required for the ionization of an electron from the ground state of the hydrogen atom?
November 2, 2011 by Lorry

Chemistry
Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n = 6 to n = 1.
October 10, 2013 by Laurie

Chemistry II
The total volume of hydrogen gas needed to fill the Hidenbrug was 2.0e8 L at 1.0 atm and 25 degrees Celsius. How much heat was evolved when the Hidenburg exploded, assuming all the hydrogen reacted? 2.0e8 L H2/22.4 L H2 = 8.9e6 mol H2 For every 2 mol H2 used -572 kJ of energy ...
May 20, 2007 by Jayd

Chemistry
The isotopic abundance of naturally occurring hydrogen is as follows: 1H 99.985 atom % 2H 0.015 atom% When H2 gas is formed from naturally occurring hydrogen, what percentages of the molecules have molecular weights of approximately 2, 3 and 4?
October 1, 2013 by Jane

CHEMISTRY
Select all substances with an acceptor atom that can hydrogen bond to a hydrogen atom that is part of a polar covalent bond HCCH ethyne Br2 dibromine H2CCH2 ethene CH3Cl chloromethane CH3CH2CO2H propionic acid OF2 oxygen difluoride
January 24, 2009 by chris

atomic physics
What wavelenght of radiation is necessary to ionize hydrogen.