Dear student,
Hybridization of P4 is sp3.
which means one s-orbital and 3 p-orbitals.
% p = (p-orbitals / total orbitals)x100
%p = (3/4)x100 = 75 %
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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Askiitians Expert
Sagar Singh
B.Tech, IIT Delhi
						

							
P is SP3 hybridised in P4  so P character is 75%
						

							in p4 phosphorus is p3 hybridised s orbotal do not participate on bonding lone pair electrons are prsent in pure s orbital thus 100% p charecter
in p4 molecule s orbital do not participate in bonding so molecule is p3 hybridised so p char. 100%
						

							There is no sp3 hybridisation in p4Bcoz there is participate pure p orbital in hybridisation Sooo there is 100% pure p orbital
						

							
In P4 molecule there are all single bonds which means that  P4 has sp3 hybridization. Hence % p character = 3/4*100 = 75% which is the required answer. 
						

							
Their is no hybridization in P4 due to Drago's rule ( en of p is 2.12 and p is of 3rd period) and it's lone pair is in inactive s orbital just like PH3