Basicity order in group 15 ....????
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Gurvinder Kaur 7 years, 11 months ago
Hydrides of groups 15 are lewis base as there is a lone pair of electron on the group 15 elements in their hydrides.
As the atomic number of central atom increases. The lone pair of electron occupies a greater volume i.e. electron density on central atom decreases and its tendency to donate a pair of electron decreases and hence its basic strength decreases with increase in atomic number.
NH3 > PH3 > AsH3 > SbH3 > BiH3
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