Question

which of the following electronic communication belongs to LEAST and MOST metallic character respectively:-
(A) 1s²2s¹. (B)5s²5p5
(C)3s²3p6 4s¹. (D) 1s²2s²2p5

Options:-
(1) a,b
(2)d,c
(3)b,a
(4)c,d

Answer 1

Hey mate!!
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LEAST metallic- will not lose e- easily.

MOST metallic- will lose e- easily.

As, a and d belongs to same period
And in period I.E increases,and downwards the group decreases.

so, least metallic is option (d)

Also,

in option (c) After losing 1e- it will gain inert gas configuration.

so, MOST metallic is option (c)

your answer is option 2

hope you get your answer!!

जय हिन्द!!