VERSION B Multiple Chalee Which of the following regions or the electromagnetic

Question

VERSION B Multiple Chalee Which of the following regions or the electromagnetic pectrum have longer wavelengths than visible light? X-ray radiation 3. ultraviolet radiat b 2 only e, 3 only d 1 and 2 and 3 2. The energy required to break one mole of hydrogee-hydrogen bonds in Ha is 436 k/mol. What is the longest wavelength of light capable of breaking a single hydrogen-hydrogen bond 0.688 b 119 nm 132 nm d 274 nm e, 688 nm 3. For which of the following transitions would a hydrogen atom absorb a photon with the longest wavelength? a. N 1 to m 2 4 to 5 to n 4. All of the following sets of quantum numbers are allowed ExCEPT m 5, E-3, m b, 4, 2, 3, E- 0, m 2, E-1, m 5. What type of orbital is designated n 3, -2, m +1? c, 3d none

Explanation / Answer

1)
only radio wave from the given choices have wavelength longer than visible light
Answer: b

2)
Energy for 1 mol of bond = 436 KJ = 436000 J
Energy for 1 bond = 436000 / (6.022*10^23) = 7.24*10^-19 J

now use:
E = h*c/wavelength
7.24*10^-19 = (6.626*10^-34)*(3*10^8)/wavelength
wavelength = 2.74*10^-7 m
= 274 nm

Answer: d

I am allowed to answer only 1 question at a time

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