Each element has a different set of energy levels. Use this fact to explain why the colour of the light emitted by an element in the gaseous stare is characteristic of the element? Ive read and researched Quantum physics for

60,802 results
  1. Physics 2

    The heating element of a clothes dryer has a resistance of 11 and is connnected to a 240-V electrical outlet. What is the current in the heating element? If the clothes dryer is run for 5 minutes, how much energy has been delivered to its heating element?

  2. MATH

    Check It For Me Pleaseee Question 1 A) How do you know whether a relation is a function?(1 point) -By determining if each value from one set maps to another set such that each element of the domain pairs with exactly two elements of the range. -By

  3. Chem help

    Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s1. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons does an atom of this elelemt have?

  4. chemistry final-urgent

    Choose the element with the highest ionization energy element: Na, Mg, Al, P, S In my book: ionization energy increase from left to right and bottom to top. Na

  5. Chemisrty

    Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s1. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons does an atom of this elelemt have?

  6. Chemistry

    An atom contains a total of 25 electrons. When the atom is in the ground state, how many different principal energy levels will contain electrons? a. 1 b. 2 c. 3 d. 4 I really don't get this because I thought energy levels went like 2, 8, 18, 32, and 50,

  7. Science

    What element has 7 Valence Electron and 3 energy levels?

  8. 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

  9. chemistry

    what element has four energy levels and two electrons on its outer shell

  10. 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-

  11. Chemistry -Flame colors (check+help)

    What are the characteristic flame color for sodium, potassium, barium, copper, strontium, and calcium? Explain why? Ans: i know the flame colours, but for the explain why, could the below be a possible answer? The characteristic flame color is due to the

  12. Chemistry

    Did I answer these correctly? 1. What is the total number of principal energy levels or shells in an atom with an atomic number of 30? a. 3 b. 4 c. 5 d. 6 I choose b. 2. The electron configuration of an atom in the ground state is 2-4. The total number of

  13. Chemistry (Electrons in Atoms)

    True or False. 1)Electrons give off light as they drop to lower energy levels. 2)Electrons travel around the nucleus as waves. 3)A photon of low frequency light has more energy than a photon of high frequency light. 4)Orbitals with equal energy levels each

  14. CHEMISTRY

    On the ionization energy vs. atomic number graph, the peaks, which are Noble Gases, gradually get smaller. Which statement below would best explain that pattern? A Each successive element on the peaks has fewer electrons and that would make ionization

  15. chemistry

    1.) If the spacing between two electronic energy levels in atom A is larger than in atom B, then the wavelength of the light emitted by atom B will be longer. 2.) If the spacing between two electronic energy levels in atom A is smaller than in atom B, then

  16. Chemisty

    Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p3. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons does an atom of this elelemt have? D.

  17. chemistry

    1.what is meant by atomic number of an element? 2.the mass number of an element is 18,it contains 7 electrons.what is the number of protons and neutrons in it?what is the atomic number of the element? 3.an element has an atomic number of 11 and its mass

  18. Science

    Which factor should be included in a model of energy flow into the atmosphere? variations in local temperatures places experiencing drought concentrations of greenhouse gases number of flood days per year How does climate change affect energy in the

  19. chemistry

    Examine the three listed elements of Group 13. boron (B), aluminum (Al), gallium (Ga) If boron has two energy levels, then how many energy levels do the other two elements have? Aluminum has three energy levels, and gallium has four energy levels. Aluminum

  20. Further maths

    A binary operation * is defined on the set R of real number by a * b = a + b + ab ( where a, b belong to R ). Calculate 5 * ( - 2 ) * and find the identity element e of R under the operation. Determine the inverse under * of a general element a belong to R

  21. GRADE 12 APPLIED MATH

    The Problem: The set T is defined to be all two digit multiples of 2 under 25. 1. How many subsets are there for T? 2. Create a set, V, that is a subset of T. 3. State an element that is in T but not in V. 5 MARKS: 1 mark for showing work in a) 1 mark for

  22. physics

    Which of the following is true for the transition of electrons from a higher energy to a lower energy state? Choose one answer. a. The greater the energy difference between the levels, the more is the wavelength of the photons emitted. b. The greater the

  23. Physics

    A current of 4.00 A flows through the heating element of heater converting 500 J of electrical energy into thermal energy every second. What is the voltage across the ends of the heating element? a. 2000 V b. 125 V c. 250 V d. 0.008 V e. 0.125 V

  24. Biology

    Element R and Element Q have the same number of valence electrons. These elements both have similar chemical behavior, but Element R has fewer energy levels than Element Q.

  25. Chemistry

    I have an assignment to 'Research ionization energy levels and come up with 3 real world applications' and was told to look up lasers, plasma arcs and neon lights. Hours later, (lol) I'm still having a little trouble. Is there any way someone can explain

  26. Algebra

    Question : Determine whether each of the following given sets is a group with respect to the indicated operation. Show your work. (b) The set E of all even integers with operation addition. My work : So I was working on above part (b) Following is an

  27. chemistry

    1. Write the electron configuration for each atom or ion. Then explain the distribution of electrons among energy levels. Ca, Be2+, and Br- I already found the electron configurations but I don't understand the second part of the question.(Then explain the

  28. Chemistry

    Name an element that has 5 electrons in the third energy level. How do i determine the third energy level Row three on the periodic table is third energy level If memory serves me will, it begins with sodium. Ok. iS Krypton the electron configuration that

  29. Physics

    Explain how the emission lines in the spectrum of a gas are evidence for discrete energy levels within atoms. Thank you 🙏

  30. Elements

    how can someone find out which element is a more chemically active nonmetal from looking at the Periodic Table? What element is a black crystal that hs 4 electrons in its outermost energy level?

  31. math

    Consider the set of northwestern states or provinces {Montana, Washington, Idaho, Oregon, Alaska, British Columbia, Alberta}. If a person chooses one element, show that in three yes or no questions, we can determine the element.

  32. Physical Science

    What element has 6 valence electrons and 6 energy levels?

  33. Physical Chemistry

    26.Use Russell-Saunders LS coupling to derive the ground state levels of (a) Ne (b) F (c) Sc (d) Zr (e) C. 30. a. Construct a Grotrian diagram for the He emission spectrum (shown on the right) and use it to assign as much of this spectrum as you can using

  34. math

    suppose a data set has n elements with n greater than or equal to 6. as you know, if n is even, then the median of the set does not have to be an element of the set. for what values of n does the first quartile not have to be an element of the set?

  35. Chem.

    Three emission lines involving three energy levels in an atom occur at wavelengths x, 1.5x, and 3.0x nanometers. Which wavelength corresponds to the transition from the highest to the lowest of the three energy levels? Please help me, thank you very much

  36. physics

    an electric heating element is conneceted to a 110V circuit and a current of 3.2 a is flowing through the element. How much energy is used up during a period of 5 hours by the element?

  37. 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

  38. CHEMISTRY

    I have an assignment to 'Research ionization energy levels and come up with 3 real world applications' and was told you look up lasers, plasma arcs and neon lights. Hours later, (lol) I'm still having a little trouble. Is there any way someone can explain

  39. physics

    Which of the following is true for the transition of electrons from a higher energy to a lower energy state? Choose one answer. a. The greater the energy difference between the levels, the more is the wavelength of the photons emitted. b. The greater the

  40. math

    Rewrite the following using mathematical symbols: a. Q is equal to the set whose elements are a, b, and c. b. The set containing 1 and 3 only is a proper subset of the set of natural numbers. c. The set containing 1 and 3 only is not a subset of {1,4,6,7}

  41. Physics

    Explain atomic line spectra in terms of transitions between discrete energy levels.

  42. science

    Which factor should be included in a model of energy flow into the atmosphere? variations in local temperatures places experiencing drought concentrations of greenhouse gases number of flood days per year How does climate change affect energy in the

  43. Science/Chemistry

    How many electrons can occupy a single molecular orbital? and Alumimum is a group 3A metal, Which ion does A1 typically form? I'm thinking Al3+ Your first question depends on the molecule involved and how it is bonded. Hybrid molecular orbits can be

  44. biology

    Picture true of false The atom shown in the diagram has 4 energy levels or shells. 2. The atom shown in the diagram above has a total of 5 electron orbitals. 3. Each energy level consists of 2 or more orbitals. 4. The second energy level consists of 4

  45. math

    Each element in a data set is multiplied by 2, and each resulting product is then increased by 5. If 'm' is the mean of the final data set, which of the following expressions gives the mean of the original set in terms of 'm'? ~why is the answer

  46. computer science

    Write a method printBackwards that prints an array of integers in reverse order, in the following format. For the array {1, -3, 4, 7, 2}: element [4] is 2 element [3] is 7 element [2] is 4 element [1] is -3 element [0] is 1

  47. Quantum Physics

    Each element has a different set of energy levels. Use this fact to "explain" whay the colour of the light emitted by an element in the gaseous state is characteristic of the element. When an electron falls from one of the higher energy levels to a lower

  48. Science

    Each element has a different set of energy levels. Use this fact to explain why the colour of the light emitted by an element in the gaseous state is characteristic of the element? I will be happy to critique your thinking on this.

  49. chemistry:energy level of element

    each element has a different has a different set of energy level use this fact to explain why colour of light emited by an element in gaseous state is the characteristics of the element The light emitted is characteristic of a specific set of allowed

  50. science

    How do I use the fact that each element has a different set of energy levels to explain why the colour of the light emitted by an element in the gaseous state is characteristic of the element? Energy affects frequency and frequency determines wavelenght.

  51. Science help please...

    Each element has a different set of energy levels. Use this fact to explain why the colour of the light emitted by an element in the gaseous stare is characteristic of the element? Ive read and researched Quantum physics for over a week now and i still

  52. science

    I know that every element has only a certain set of allowed energy states & that the exact energy of these states depends upon the number of electrons, but why is the colour of the light emitted by an element (in GASEOUS STATE) characteristic of the

  53. Science

    Explain, with the help of an appropriate labelled sketch diagram, how a hydrogen atom, which has only one electron, has so many spectral lines. The diagram of the energy levels follows: --------------- --------------- --------------- -----------------

  54. Chemistry

    Can anyone tell me why a hydrogen atom has so many spectral lines even though it has only one electron? Also how would I explain this using a diagram? There are many unfilled energy levels above ground. Excited electrons can move betwixt those levels on

  55. Science

    Why is the colour of the light emitted by an element in its gaseous state characteristic of the element? And why does hydrogen with only one electron have so many spectral lines? I have some idea but I need to clarify my understanding against someone

  56. discrete math

    Fill in the blanks: For all sets A and B, if A is in the set of B, then A union B in in the set of B. Proof: Suppose A and B are any sets and A in in the set of B. [we must show that __________] Let x be and element of _______. [we must show that

  57. Check answers

    Environmental science Explain why the energy pyramind levels change in size? There is not enough energy to support the organisms that are higher up in the energy pyramid because too much energy gets lost. What is the ultimate source of energy for most food

  58. Science

    Which element has 6 energy levels and 7 valence electrons? Astatine (At) Polonium (Po) Seaborgium (Sg) Rhenium (Re)

  59. Emission Spectrum of hydrogen ...CHEM

    Can someone please explain the emissiom spectrum of hydrogen? THose lines represent the energy released by the electron when going from one orbital (energy level) to a lower orbital. The difference of energy levels exactly corresponds to the energy in the

  60. Chemistry

    If an element has the atomic number 20, what sublevels are present? It has a p sublevel. The first energy level has an s; the second energy level has an s and a p; the third energy level has an s, p, and d; the fourth energy level has an s. It has an s

  61. Science

    The line spectra of two elements are not identical because- (A)The element do not have the same number of neutrons (B)They have different mass numbers (C)Their outermost electrons are at different energy levels (D)They have different valencies

  62. physics

    The drawing shows three energy levels of a laser that are involved in the lasing action. These levels are analogous to the levels in the Ne atoms of a He-Ne laser. The E2 level is a metastable level, and the E0 level is the ground state. The difference

  63. Science

    How does a light bulb transform electrical energy into radiant energy? The metal filament is heated hot so the the outer electrons on the atoms become exited to higher unstable energy levels, and as they come back to natural levels, light is emitted. THANK

  64. science

    Identify the fruit or vegetable you selected and relate the second law of thermodynamics to the changes in energy observed in Appendix C. How did the amount of energy gained compare to the amount of energy lost as heat at the second through fourth trophic

  65. Math

    Consider the universal set U = (x is an element of N/3 < x < 13), and the subsets A= (multiples of 3) and B =(4,6,12) a. List the elements of the following set. A b. List the elements of the following set. *the intersection of A and B' c. write down one

  66. Science

    .Define the following terms and provide a example of each: -atom, - compound, - element, -energy, - photosynthesis, -matter, - decomposition. Write it in your own words. . Explain the forms of energy: radiant, chemical, mechanical, electrical, thermal. .

  67. Chemistry

    ELement A has a valence electronic structure of ns2np1. Element B has the valence electronic structure of ns2np5. If the value of n for element A is 3, what is the set of 4 quantum numbers that would describe the energy of the electron represented by np1?

  68. Chemistry 101

    1)Which has a larger ionization energy, an electron in the 2p orbital of Cl or an electron in the 3p orbital of Cl? Explain why. 2)Which element has the highest first ionization energy? B or C. Explain why. 3)Which element has the highest first ionization

  69. CHEMISTRY

    I have an assignment to 'Research ionization energy levels and come up with 3 real world applications' and was told you look up lasers, plasma arcs and neon lights. Hours later, (lol) I'm still having a little trouble. Is there any way someone can explain

  70. physics

    Which of the following is correct for the energy levels in an atomic system? Choose one answer. a. The energy value increases with the distance from the nucleus. b. The energy value decreases with the distance from the nucleus. c. The energy value remains

  71. chemistry

    For the elements in row 2 of the PT discover the relationship between ionization and the family number of the element Element. Family. Ionization Ener Lithium. 1 13.6 beryllium. 2. 9.3 boron. 13. 8.3 carbon. 1 4. 11.27 nitrogen. 15 14.53 oxygen. 16. 13.62

  72. Chemistry

    What is the element whose d sublevel is filled and its highest energy electron has the set of quantum numbers: n=4, l=0, ml=0, ms=+1/2

  73. Chemistry

    What elements contains a full third energy level and what element contains the first p electron?? Here is an interactive site that will show you how the 1s, 2s, 2p, etc levels fill. Post your answers here if you want someone to check them. Also, you need

  74. physics

    If a more complicated atom has two energy levels for its electrons at (-15) eV and (-30.1) eV, what is the wavelength of the photon (in nm) that is emitted when an electron transitions between these two levels?

  75. science

    Which of the following statement is correct a. There are 7 principal electron energy levels. b.The second principal energy level has 4 sub-energy levels and contain a max. Of 8 electrons. c.The principal energy level N can have a max. Of 32 electrons. D.

  76. 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

  77. chemistry

    each element Na, Mg, Al, Si, P, S has a very big jump in ionization energies. Please explain what causes these jumps in energy?

  78. Math

    Let I denote the interval [0,oo). For each r as an element of I, define A={(x,y)element of RxR:x^2+y^2=r^2} Determine U and(INTERSECTION)A What would the set be?

  79. Physics equation?

    can anybody tell me an equation that can be used to find the number of electrons flowing through an LED every second? and also refer or give me any information that could explain another mechanism (apart from the fact that they denote energy to a single

  80. Linear Algebra, orthogonal

    The vector v lies in the subspace of R^3 and is spanned by the set B = {u1, u2}. Making use of the fact that the set B is orthogonal, express v in terms of B where, v = 1 -2 -13 B = 1 1 2 , 1 3 -1 v is a matrix and B is a set of 2 matrices

  81. Chemistry

    What would be the change in energy for an atom when an electron goes from n=6 to n=3? I'm assuming it would be negative because you would have to lose energy to go down energy levels. Would that be correct?

  82. math

    you are given a set of data: x = [1, 4, 2, 10] a) How large is the set x? b) What is the value of the element at index number 2 in set x?

  83. Chemistry

    What is the element whose 2+ cation's highest energy electron has the following set of quantum numbers, n=5, l=2, ml=1, and m.s=+1/2 for its highest energy electron? I know, based on the quantum numbers, that its referring to a 5d sublevel. Is it Ba? How

  84. science

    • Explain the flow of energy through the ecosystem using specific plant and animal examples. Correctly use the following terms in your example and explanation; primary producer, primary consumer, secondary consumer, tertiary consumer, trophic level. •

  85. math

    Consider the following: h={(1,2),(2,4),(3,6),(-1,-2),(-2,-4)}. a) Explain why h: ℤ --> ℤ does not describe h correctly. This does not describe the function h correctly because the range of the function h seems to be finite or limited to the set of even

  86. Math

    Consider the following: h={(1,2),(2,4),(3,6),(-1,-2),(-2,-4)}. a) Explain why h: ℤ --> ℤ does not describe h correctly. This does not describe the function h correctly because the range of the function h seems to be finite or limited to the set of even

  87. science

    how do you do an orbital diagram? Explain a little more fully? Do you mean the shape of the orbital, the energy levels, just what?

  88. CHEM Periodic Trends

    Each of the statements below attempts to explain why some periodic property varies predictably among elements in the periodic table. Determine if each statement is true or false. Within a family, elements with higher atomic numbers have higher

  89. English

    I forgot to include these sentences. I really hope you can have a look at them, too. 1)Frankenstein is composed of parts of dead bodies (of parts selected from corpses) 2)You forgot to introduce the element of fear when presenting the gothic fatures of

  90. math

    consider the set of Northwestern states or provinces (montana, washington, Idaho, Oregon, Alaska, British Columbia, Alberta) if a person choose one element, show that in three yes or no questions we can determine the element

  91. math

    Consider the set of northwestern states or provinces {Montana, Washington, Idaho, Oregon, Alaska, British Columbia, Alberta}. If a person chooses one element, show that in three yes or no questions, we can determine the element.

  92. math

    Consider the set of northwestern states or provinces {Montana, Washington, Idaho, Oregon, Alaska, British Columbia, Alberta}. If a person chooses one element, show that in three yes or no questions, we can determine the element.

  93. math

    Consider the set of northwestern states or provinces {Montana, Washington, Idaho, Oregon, Alaska, British Columbia, Alberta}. If a person chooses one element, show that in three yes or no questions, we can determine the element.

  94. math

    Consider the set of northwestern states or provinces {Montana, Washington, Idaho, Oregon, Alaska, British Columbia, Alberta}. If a person chooses one element, show that in three yes or no questions, we can determine the element.

  95. math

    Consider the set of northwestern states or provinces ( Montana, Washington, Idaho, Oregon ,Alaska, British? Columbis, Alberta). If a person chooses one element, show that in three yes or no questions, we can determine the element.

  96. math

    Consider the set of northwestern states or provinces {Montana, Washington, Idaho, Oregon, Alaska, British Columbia, Alberta}. If a person chooses one element, show that in three yes or no questions, we can determine the element.

  97. MATH 213

    13. Consider the set of northwestern states or provinces {Montana, Washington, Idaho, Oregon, Alaska, British Columbia, Alberta}. If a person chooses one element, show that in three yes or no questions, we can determine the element.

  98. math

    Each element in a data set is multiplied by 2, and each resulting product is then increased by 5. If 'm' is the mean of the final data set, which of the following expressions gives the mean of the original set in terms of 'm'? ~why is the answer

  99. math

    What am I suppose to do here does anybody know? Consider the set of northwestern states or provinces {Montana, Washington, Idaho, Oregon, Alaska, British Columbia, Alberta}. If a person chooses one element, show that in three yes or no questions, we can

  100. Science

    Can an element be separated from a compound? Can an element form a compound? The reaction of zinc metal and hydrochloric acid creates hydrogen gas, an element. if we create this element in a tube what property of this element requires us to keep the tube

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