Q.

The configuration 1s2 2s2 2p6 3s2 3p4 represents

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a

S

b

P

c

Na

d

Ar

answer is B.

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Detailed Solution

Electronic configuration 1s22s22p63s23p4 indicates Sulphur. Because total no. of electrons is equal to 16. Therefore, atomic number of element Z=16.

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