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Grade: 12th Pass


s-electrons of the valence shell of some elements show reluctance in bond formation. Such elements are ____ and belong to_____

2 years ago

Answers : (1)

Esha Mukherjee
26 Points
The answer will be option D
that is heavier elements of P block (preferably group 15-17)
This phenomenon is inert pair effect. Due to reluctance of s orbital electron in bond formation, the oxidation state of elements decrease.
Al 3+ is prefered over Al 1+ (lighter element)
But Tl 1+ is prefered over Tl 3+
Hope it helps :)
thus it is said that as we move down in a group, lower oxidation state is favoured :) 
one year ago
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