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The number of electrons in M-shell of an...

The number of electrons in M-shell of an element with atomic number 24 is

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The correct Answer is:
3
Configuration (Z=33) `= 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^(10) 4p^3`
Each subshell has one orbital with m = 0
`therefore ` No. of electrons `=2xx 7 +1 = 15`
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How many electrons are present in the M shell of an atom odf an el,ement with atomic number (z)24?