1.

Among the elements with atomic number 9, 12, 16 and 36 which is highly electropositive ?A. Element with atomic number 9B. Element with atomic number 12C. Element with atomic number 16D. Element with atomic number 36

Answer» Correct Answer - B
Z=9,`1s^(2)2s^(2)2p^(5)`
`Z=12,1s^(2)2s^(2)2p^(6)3s^(2)`
`Z=16,1s^(2)2s^(2)2p^(6)3s^(2)3p^(4)`
`Z=36,1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(10)4s^(2)4p^(6)`
Electropositivity decreases along the period while it increases going down the group.


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