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Electron configuration of M olybdenum (Z...

Electron configuration of M olybdenum (Z = 42) is .....

A

`[Kr] 4d^(4) 5s^(2)`

B

`[Kr] 5s^(2) 4p^(4)`

C

`[Kr] 4d^(5) 5s^(1)`

D

`[Kr] 4d^(3) 5s^(2) sp^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
`E=(hc)/(lambda),E_(1)=(hc)/(lambda_(1)),E_(2)=(hc)/(lambda_(2))`
`(6000A)/(3000A)=2/1 =2:1`
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