What is a dargo rule
Its drago's rule .... %p character in a compnd is given as cos(Ø)=p-1/p .... its applicable only for cmpounds below the secnd period like for example PH3... has bond angle nearly 90° snd thus %p character is nearly 100% =》lone pairs lie in pure s orbitals and so it is less basic than NH3 as donation of l.p becomes difficult and also protonation becomes difficult........REFER J.D.LEE For Chemical Bonding its all in there snd its very much useful
Elements of p block do not get hybridized, their orbitals do not combine to form hybrid orbitals. Whenever they form bonds with lesser EN elements such as hydrogen or elements having EN lesser or equal to 2.1. In such cases bond is formed by direct overlapping of atomic orbitals ex pnicogen family, oxygen family. This also explains the case of PH3
It has its applications in hybridization. Elements of p vl
This rule is applied in which sub. Chem phy maths????