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why bih3 is feebly basic?

why bih3 is feebly basic?

Grade:12th Pass

1 Answers

Aman Bansal
592 Points
9 years ago

Dear Prashant,

Nitrogen has a small size due to which the lone pair of electrons is concentrated in a small region. This means that the charge density per unit volume is high. On moving down a group, the size of the central atom increases and the charge gets distributed over a large area decreasing the electron density. Hence, the electron donating capacity of group 15 element hydrides decreases on moving down the group.

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