The radius of electron orbit and the speed of electron in the ground state of hydrogen…
Physics · Class 12 · CBSE — Atoms
The radius of electron orbit and the speed of electron in the ground state of hydrogen atom is 5.30 × 10–11 m and 2.2 × 106 m s–1 respectively, then the orbital period of this electron in second excited state will be
- 1.21 × 10–14 s
- 1.21 × 10–12 s
- 1.21 × 10–10 s
- 1.21 × 10–15 s
Answer
(B) 1.21 × 10 –12 s
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