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If the electronic configuration of an

Question:

If the electronic configuration of an element is 1s2 2s2 2p6 3s2 3p6 3d2 4s2, the

four electrons involved in chemical bond formation will be_____.

(i) 3p6

(ii) 3p6, 4s2

(iii) 3p6, 3d2

(iv) 3d2, 4s2

Solution:

Option (iv) 3d2, 4s2 is the answer.

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