Atomic Structure Question 212

Question: An element has the electronic configuration 1s2,2s22p6,3s23p2 . Its valency electrons are [NCERT 1973]

Options:

A) 6

B) 2

C) 3

D) 4

Show Answer

Answer:

Correct Answer: D

Solution:

An element has the electronic configuration 1s2,,2s2,2p6,3s2,3p2,,(Si) . It-s valency electrons are four.



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