?When comparing the Bohr Model to the Quantum Model, which of the following stat

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?When comparing the Bohr Model to the Quantum Model, which of the following statements is(are) true? (Check all true statements. You must get this question completely correct to receive credit.)

1. -2.4 points 0/3 Submissions Used My Notes Ask Your Question Part 1 2 a) In comparing the Li2+ and the Be3+ ions using Coulombs' Law, which ion will be at lower energy? Li I21 O Be3+ b) If the electron-nucleus distance is the same, by what factor do the two energies differ? (Report your answer to two places past the decimal point.) 2. +-2.4 points 0/3 Submissions Used My Notes Ask Your a) In comparing n-1 levels in the Li2+ and the Be3+ ions using the Bohr Model, which ion will have the lower energy n-1 level? Be3+ Li 12 b) If the value of R is the same, by what factor do the two energies differ? (Report your answer to two places past the decimal point.) 3. + 1.2 points 0/3 Submissions Used My Notes Ask Your When comparing the Bohr Model to the Quantum Model, which of the following statements is(are) true? (Check all true statements. You must get this question completely correct to receive credit.) O Only the Bohr model correctly characterizes the emission spectrum of hydrogen The Quantum model has sublevels, the Bohr model does not. The Bohr model uses waves to model the electron, the Quantum model does not. Both models have quantized energy levels.

Explanation / Answer

1) The energy equation derived from Columb's law in Bohr's model is :-

E = -13.6(Z2/n2) eV ; where Z = atomic number of the ion & n = orbit in which the electron is residing

Z value for Li = 3 & for Be = 4

If 'n' value is same for both Li2+ & Be3+ , then clearly, Be3+ will be at lower energy

2)energy of Li2+/energy of Be3+ = 32/42 = 9/16 = 0.56

i.e energy of Li2+ = 0.56 times the energy of Be3+ (numerically)

3) The correct statements are:-

a) Bohr model has quantized energy levels

b) The quantum model has sublevels,the Bohr model doesnot.

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