An element of p-block in which last electron enters into s-orbital of valence shell insteatd of p-orbital is :

An element of p-block in which last electron enters into s-orbital of valence shell instead of p-orbital is :

The elements in which electron enters to 3d orbitals

If f-block elements, the last electron enters the

The elements in which the extra electron enters (n-2)f orbitals are called

The elements in which the extra electron enters (n-2)f orbitals are called

The elements in which the last electron enters into the p-orbitals of their outer-most shell are called p-blocks elements:- Give a method for the preparation of phosphine.

The elements in which the last electron enters into the p-orbitals of their outer-most shell are called p-blocks elements:- Name two allotrops of sulphur.

The number of orbitals in a p-sub-shell is

The number of orbitals in a p-sub-shell is