" The weakest + m group o the given species is: "

The weakest +m group of the given species by:

Select group of linear species :

Select from each group of the species which has the smallest radius stating appropriate reason. O, O^- , O^(2-)

The group having isoelectronic species is

The group having isoelectronic species is :-

The group having isoelectronic species is

The group having isoelectronic species is -

The group having isoelectronic species is-