1. | 158.7 Å | 2. | 158.7 pm |
3. | 15.87 pm | 4. | 1.587 pm |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following series of transitions in the spectrum of hydrogen atoms falls in the visible region?
1. Brackett series
2. Lyman series
3. Balmer series
4. Paschen series
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAccording to the Bohr Theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon?
1. n = 5 to n = 3
2. n = 6 to n = 1
3. n = 5 to n = 4
4. n = 6 to n = 5
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe frequency of radiation emitted when the electron falls from n = 4 to n = 1 in a hydrogen atom will be:
(Given ionization energy of H = 2.18 × 10–18 J atom –1 and h = 6.625 × 10–34 Js):
1. 1.03 × 1015 s–1
2. 3.08 × 1015 s–1
3. 2.00 × 1015 s–1
4. 1.54 × 1015 s–1
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology