# Science-Bohr Model 2

36,767 results

### Physical Science

Please use the Bohr model simulator at Michigan State University to complete the table below: initial orbital ending orbital Wavelength (nm) 3 2 4 2 2 434 2 410.2 7 2 397 4 3 5 3 Bohr Model Simulation McGraw-Hill (Java)

### Chemistry

The Bohr model stops representing correct atomic structure when? Why? What does this mean for remaining atoms? How does Bohr's model relates to the periodic table?

### science

in an atom electrons move in definite orbits around the nucleus much like planets cirlce the sun. who said this - I think Bohr choices are: Bohr rutherford wave model Thompson democritius

### physics

please someone give me a hand at this problem. . . Describe the Bohr model of the atom. What is Bohr’s key idea (involving matter waves) that makes the Bohr atom have discrete energy levels?

### Science

In what ways is Bohr's model of the atom similar to and different from Thomson's model?

### science

explain how the path of an electron differs in Bohr's model and in the modern model of the atom

### science

one way the modern atomic model differs from the bohr model of an atom

### phyical science

explain how the path of an electron differs in bohr's model and in the modern model of the atom

### Physical Science

Explain how the path of an electron differs in Bohr's model and in the modern model of the atom.

### phsyical science

explain how the path of an electron differs in Bohr's model and in the modern model of the atom

### science

an atom is the smallest piece of matter which model does this describe Democrtius dalton Rutherford Thompson Bohr Wave Model

### Science

In what ways is Bohr's model of the atom similar to and different from Thomson's model? I still need someone to help me.. I don't know the similarities and differences..

### chemistry

1. what do the spectral lines represent in the bohr atomic model? 2. What do the black spaces represent in the Bohr atomic model?

### physics

1.Distinguish between atomic physics and nuclear physics? 2.Briefly describe the Bohr model of the atom. What is Bohr’s key idea (involving matter waves) that makes the Bohr atom have discrete energy levels? I really didn't understand what they were wanting, so many of ...

### Physics

Describe the Bohr model of the atom. What is de Broglie's key idea (involving matter waves) that makes the Bohr atom have discrete energy levels?

### 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...

### Chemistry

What the difference between an orbit in the Bohr model and an orbital in the quantum mechanical model of the atom?

### physical science

compare the postions of the electrons in Bohr's model of the atom with their positions according to modern atomic theory

### Physics

Can you please help me with the following questions. Thanks! How does Rutherford's model of the atom acoount for the back-scattering of alpha particles directed at the gold leaf? What is Bohr's key idea (involving matter waves) that makes the Bohr atom have discrete engergy ...

### science

How did Rutherford, bohr, and quantum geiger-marden metail-foil experiments contradict thomas's raisin pudding model of the atom?

### physics

Explain what ideas led Bohr to suggest a new atomic model; and state Bohr postulates. Explain also, in words, what the correspondence principle is in atomic physics.

### chemistry

1) what flaws exsit in Dalton's model of the atom? 2) what flaws exist in Thompson's plum pudding model of the atom? 3) what flaws exist in Rutherford's model of the atom? 4) what flaws in Bohr's model of the atom? 5) do any flaws exist in the modern quantum model of the atom...

### chemistry 11

explain the process of a bohr model

### physical science

compare the positions of the electrons in bohr's model of the atom with their positions according to modern atomic theory. state the importance of valece electrons in the organization of the periodic table

### CHEMISTRY

PLEASE HELP I REALLY DO NOT UNDERSTAND THIS YOU DON'T REALLY HAVE TO ANSWER THE QUESTIONS BUT AT LEAST JSUT A LITTLE HINT THATS ALL PLEASE AND I HAVE A QUIZ ON THIS TOMORROW MY TEACHER REALLY CANNOT TEACH 1) what flaws exsit in Dalton's model of the atom? 2) what flaws exist ...

### Science-Bohr Model 2

compare the # of empty spaces in the outer shell of the non-metals with the ion charges. whats the relationship? I don't get this question, can someone please explain. What empty spaces is it referring to ?

### science

an atom is made of a positively charged nucleus surrounded by a large region in whci hscientists can predict where an electron is likey to be found. I think this is attributed to rutherford choices are: rutherford, wave model, thompson, dalton or bohr.

### Physics

Using the Bohr model of hydrogen, find the linear momentum, when n=3.

### Physics

Who originally designed the planetary model of an atom? Bohr or Rutherford

### science

I choose these 3 as dalton atoms of same element are exactly alike atoms are invinsible atoms are smallest piece of matter choices were dalton rutherfird wave model bohr democritius

### science

Are these correct for Democritius Help so confused - I read site and still trying to figure out. atoms of same element are exactly alike an atom is mostly empty space with a dense - postiveily chareged nucleus These are the choices Rutherford wave model dalton Bohr democritus

### chemistry (Bohr model)

The second ionization energy of He is almost exactly four times the ionization energy of H, and the third ionization energy of Li is almost exactly nine times the ionization energy of H: IE (MJ mol-1) H(g) --> H +(g) + e- (1.3120) He+(g) --> He2+(g) + e- (5.2504) Li2+(g...

### PHYSICS

Calculate for Bohr's atomic model the speed of the orbiting electron in the n = 7 state. (Answer in m/s)

### Science-Bohr Model 2

how many shells r needed 4 the elements in each of the 1st rows of the periodic table. Im kind of getting confused. When it says rows; does it refer to groups or no? I referred rows to the groups for my last question and came up with a pattern, but now I'm unsure of of myself.

### physics help!

Using the Bohr model, estimate the wavelength ë of the Ká characteristic X-ray for a metal an atom of which contains Z = 50 protons.

### physics

Using the Bohr model, estimate the wavelength ë of the Ká characteristic X-ray for a metal an atom of which contains Z = 50 protons.

### Physics please help!

Using the Bohr model, estimate the wavelength ë of the Ká characteristic X-ray for a metal an atom of which contains Z = 50 protons.

### Chemistry

electromagnetic radiation of which frequency (in Hz) can be emitted by the hydrogen atom upon transition of an electron from n= 6 to n= 2 according to the bohr model.

### Science-Bohr Model 2

For the metal elements, whats the connection between the ion charge and the # of electrons in the outershell? I wrote: The ion charge is positive for all metal elements and the electron # increases. please add any other info, thanks

### 11th grade

According to Bohr model, what determines the color of light emitted when an electron moved from one energy level to another?

### 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 ...

### chemistry

According to the Bohr model of the hydrogen atom, how is hydrogen's bright line spectrum produced?

### Science-Bohr Model 2

is there a pattern betweent he # of electrons in the outers shell of an element and its position along the row in the Perioidic table. whats the pattern? I know that there is a pattern, but I'm unable to explain. I looked at the first group of elements which included Hydrogen...

### PHYSICS

In the Bohr model of the hydrogen atom, the electron makes 6.00×10^15 rev/sec around the nucleus.What is the average current at a point on the orbit of the electron?

### physics

In the Bohr model of the atom, the ground-state electron in hydrogen has an orbital speed of 2190 km/s.The mass of an electron is 9.11×10−31kg. What is its kinetic energy?

### mojo

A hydrogen atom is in its elevnth excited state, n = 12. Using the Bohr model of hydrogen, find the linear momentum. You want to solve for the electron velocity and multiply that by the electrn mass. There are many ways to do this. One would be to get the radius of the orbit ...

### CHEMISTRY

6. The H atom and the Be3+ ion each have one electron. Does the Bohr model predict their spectra accurately? Would you expect their line spectra to be identical? Explain.

### 11th grade

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.17 x 10^6 m/s. find the central force acting on the electron as it revolves in a circular orbit of radius 5.42 x 10^-11m.

### Chemistry

3. Using Bohr’s model of the atom, calculate the energy required to move an electron from a ground state of n = 2 to an excited state of n = 3. Express your answer in both J/photon and kJ/mol.

### Political Science

Is the rational-comprehensive model or the incremental model best used to describe policymaking in the United States? Provide examples to support your model choice

### physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.

### physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.

### physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.

### physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.

### Physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.1 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.51 × 10−11 m. Answer in units of N

### Physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.45 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 5.18 × 10−11 m. Answer in units of N

### chemistry

In the Bohr model, which is the lowest energy state available for an electron? A. nth B. excited state C. first state D. ground state Im thinking the answer is c or d.

### Science

Why is the Bohr Theory incompatible with the uncertainty principle?

### science

Why is the Bohr Theory incompatible with the uncertainty principle?

### Chemistry Help!!!!

for each of the following pairs of elements, give the correct molecular formula, explain how you arrived at this answer( you may use the Bohr model notation, or the orbital model notation, or explain linguistically) and note whether the bonding is covalent or ionic. ( I tried ...

### Physical Science

I need some help. I have tried working this problem and can't get it. A class is building a scale model of the planets based on the model of Mercury having a radius 0.5cm. What is the diameter of Saturn for this model?

### Math

Mrs. Roberts plans to purchase a microscope for a present as a Christmas gift. The A model magnifies to a maximum of 5 x10 2 power , while the b model magnifies to a maximum of 3x10 3 power times. Which of the following statements is true? 1. The b model is 6 times stronger ...

### science

describe the difference between a ball-and-stck model and a space-filling model of a compound ? Vanessa--Have you seen a ball-and-stick model and a space-filling model? If so you will know how to answer this. dont give me stupid answers i can on for help not bs

### Science

how do you draw a bohr diagram of a atom and a ion and how are they different????

### Physics/electricity

In the Bohr model of the hydrogen atom, an electron in the 2nd excited state moves at a speed of 5.48X10^5 m/s in a circular path having a radius of 2.12X10^-10 m. What is the effective current associated with this orbiting electron?

### Physic please check

Consider two different hydrogen atoms. The electron in each atom is in an excited state. (a) Is it possible for the electrons to have different energies but the same orbital angular momentum L, according to the Bohr model? Justify. No.Electrons within the same obital angular ...

### Algebra 1

An architectural firm makes a model of a science center they are building. The ratio of the model to the actual size is 1 in.:85 ft. Estimate the height of the building if the model is 1.5 inches tall.

### Science

need info about Niels Bohr's quantum theory????????

### College Physics

the electron in a hydrogen atom can, according to the Bohr atomic model, be regarded as moving at constant speed in a circular orbit of radius 0.053nm. Calculate the tangential speed of this electron

### Chemistry

According to the Bohr model, what determines the color of light emitted when an electron moves from one energy level to another? The wavelength of the photon emitted depends on the difference of the two levels the electron moved from/to.

### Chemistry

Calculate the energy (in kJ/mol) required to remove the electron in the ground state for each of the following one-electron species using the Bohr model. (a) He+ kJ/mol (b) Li2+ kJ/mol

### Chemistry

Calculate the energy (in kJ/mol) required to remove the electron in the ground state for each of the following one-electron species using the Bohr model. (a) He+ kJ/mol (b) Li2+ kJ/mol

### Science

What are the advantages and disadvantages of Mathematical model - disadvantage: it often cannot account for all possible factors Advantage to a mathematical model is it can be applied to categories of any size and can predict complex events Physical Model - Disadvantage: they ...

### physics

In the Bohr model of the hydrogen atom, an electon mass= 9.11 x 10^-31 kg orbits a proton at a radius of 5.29 x 10^-11 m. The proton pulls on the electron with a force of 8.20 x 10^-8N. what is the speed of the electron? what is the period of the electron? I really need help ...

### Science

The energy of transition of an electron from 5th to the 3rd Bohr orbit of a hydrogen atom

### physics

) A hydrogen atom has its electron in the n = 5 level. The radius of the electron's orbit in the Bohr model is 1.323 nm. Find the de Broglie wavelength of the electron under these circumstances. What is the momentum, mv, of the electron in its orbit?

### physics

(a) A hydrogen atom has its electron in the n = 5 level. The radius of the electron's orbit in the Bohr model is 1.323 nm. Find the de Broglie wavelength of the electron under these circumstances. (b) What is the momentum, mv, of the electron in its orbit?

### Physical Science

I need some help. I have tried working this problem and can't get it. A scale model of the solar system is being constructed where 40cm of the model represents 0.5 AU of actual distance. What is the model dimension, in meters, for the distance of Jupiter from the sun?

### Science

Evaluate the value of the Bohr orbit in a hydrogen atom whose principal quantum number is 1.

### science help

What would happen to the current model of the atom if new information about its structure is discovered in the future? A. The current atomic model would be revised. B. The current atomic model would be strengthened. C. The current atomic model would be proven. D. The current ...

### Science

A hurricane becomes more powerful be evaporating water from? lakes mountains oceans*** rivers 1. Over time, scientists have changed their model of our solar system. It has transitioned from A) a sun-centered to an moon-centered model. B) a sun-centered to an earth-centered ...

### Science

1. How is a model of an atom different from a real atom? A. A model of an atom is not as big as an actual atom. B. A model of an atom is the same as a real atom. C. A model of an atom is more complex than a real atom. D. A model of an atom is not as small as an actual atom. I ...

### Chemistry

Assuming that the Bohr model is valid, what is the kinetic energy of a photoelectron liberated by a photon with a the given wavelength from a state with given Z and n? If the available energy is insufficient to break the tether, enter 0. λ=320 nanometers from a state with...

### Science!

Ernest Rutherford's atomic model included a nucleus comprised of positive particles called protons. Later, James Chadwick discovered neutrons. How did Chadwick's discovery change the atomic model? A. The new model showed a negatively charged nucleus. B. The new model showed a ...

### Science please help

Draw Bohr diagrams of a magnesium atom bonding with fluorine atoms. Draw atoms then electron transfer and finally the ions that form. What type of bonding occurs? Draw Bohr diagrams of 2 hyrdogen atoms bonding with an oxygen atom by sharing electrons to form a water molecule. ...

### Science- Very Urgent

is it reasonable to expect that these models will change again in time? Explain. Like the bohr diagram and etc;

### physical science

Which one of these statements is true about Copernicus? a. His model included planetary orbits that were circular. b. He believed that Ptolemy's ideas about the shape of orbits were correct c. His model could not account for retrograde motion of Mars. d. His model of the ...

### 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 ...

### 8th grade science :(

How are the Heliocentric Model and the Geocentric Model Similar? List as many ways as you can.

### Math

The depth of the first model of a mobile phone measure 7/20 of an inch. The second model is 6/7 Was the depth of the first model. The third model measured 27/35 of the size of the first model. The fourth model was 4/5 the size of the first model. What is the size of each model...

### science

i have to make a model on global warming(a 3d model)can u plzz...give some ideas.

### Science

What was the main difference between Dalton's model of the atom and the model that was first developed by the Greeks?

### Chemistry

What is the empirical distinction between emission and absorption spectra? In general terms, how did Niels Bohr explain each of these spectra? In general terms, emission spectra are obtained when the electron is at a high energy level and it falls to a lower energy level. In ...

### physical science

How would you know if a model is a good model?

### atoms

If i was to draw a diagram of a hydrogenatom with one electron and its many spectral lines would i need to draw the BOhr model with the nucleus in the middle and 3 outer rings or have i lost the plot That is one way. Actually, there are an infinite number of stable orbits that...

### Physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.41 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 5.15 × 10−11 m. Answer in units of N. Find the centripetal acceleration of the ...

### Physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.41 × 10^6 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 5.15 × 10^−11 m. Answer in units of N. Find the centripetal acceleration of ...

### Physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.31 × 106 m/s.Find the central force acting on the electron as it revolves in a circular orbit of radius 4.95 × 10−11 m. Answer in units of N. Find the centripetal acceleration of the ...

### math

Uncle Toby is making a scale model of the battlefield at Fredericksburg. The area he wants to model measures about 11 mi by 7.5 mi. He plans to put the model on a 3.25 ft by 3.25 square table. On each side of the model he wants to leave at least 3 inches between the model and ...