From quantisation of angular momentum, one gets for hydrogen atom, the radius of the n th…
Physics · Class 12 · CBSE — Atoms
From quantisation of angular momentum, one gets for hydrogen atom, the radius of the nth orbit as \(r_{n}=\left(\frac{n^{2}}{m_{e}}\right)\left(\frac{h}{2 \pi}\right)^{2}\left(\frac{4 \pi^{2} \varepsilon_{0}}{e^{2}}\right)\)For a hydrogen like atom of atomic number Z,
- the radius of the first orbit will be the same
- rn will be greater for larger Z values
- rn will be smaller for larger Z values
- none of these
Answer
(C) r n will be smaller for larger Z values
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