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Atomic number of H-like atom with ioniza...

Atomic number of H-like atom with ionization potential 122.4 V for n = 1 is

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
C
The ionisation energy of a hydrogen atom is, `IE = (13.6 z^2)/(n^2)`
`:.z^2 = (IE xx n^2)/(13.6) = (122.4 xx (1)^2)/13.6 = 9`
` z = 3`
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