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Question

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

A
4
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B
6
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C
8
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D
10
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Solution

The correct option is D 10
Total number of electrons =(2+8+6)=16
So, Atomic number =16
Electronic configuration =1s2, 2s22p6, 3s23p4
So, total number of p electrons =(2p6+3p4)=10.
Therefore, option(d) is the correct answer.

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