MCQ
What is the ratio of time periods in $3^{rd}$ orbit of $H-$ atom to the $2^{nd}$ orbit of $He^+$ ion
- A$32 : 27$
- ✓$27 : 2$
- C$2 : 27$
- D$27 : 32$
✓
Answer
Correct option: B.
$27 : 2$
b
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