Question

A neutral atom has $2K$ electrons, $8L$ electrons and $6M$ electrons. Predict total number of s-electrons.

• A. 4
• B. 6
• C. 8
• D. 10

Answer 1

The correct option is B 6

The electronic configuration of a neutral atom which $2K$ electrons, $8L$ electrons and $6M$ electrons will be $=1s^2,2s^{2}2p^6,3s^{2}3p^4$
So, total s-electron will be 6.