In nitrogen family, the H-M-H bond angle in the hydrides gradually becomes closer to 90º on going from N to Sb.
In nitrogen family, the H-M-H bond angle in the hydrides gradually becomes closer to 90º on going from N to Sb. This shows that gradually
(a) The basic strength of the hydrides increases
(b) Almost pure p-orbitals are used for M-H bonding
(c) The bond energies of M-H bonds increase
(d) The bond pairs of electrons become nearer to the central atom
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(b) With the decrease in the electronegativity of central atom the bond angle decreases
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