" 'he species showing "p pi" - "d pi" overlapping is "

The species haing no p pi - p pi bond but has bond order equal to that of O _(2) ^(-) is

Among the following ions the p pi-d pi overlap is present in .

Among the following ions the p pi - d pi overlap could be present in

Among the following ions the p pi - d pi overlap could be present in

In which of the following species p pi - d pi bond is present but p pi - p pi bond is absent ?

Which of the following has p pi - d pi bonding ?

d_pi - p_pi bonding exists in

Assertion : To obtain effefctive p pi-p pi overlap, the size of the de-orbital must be similar to the p- orbital so the chlorine p pi-p pi bonding is strongest in their oxoanions. Reason :On moving period from left to right in the periodic table, the nuclear charge is incresed and more s and p-electrons are added. Since these s- and p- electron shield the nuclear charge incompletely, the size of the atom and that of the d- orbital decreases .This leads to progressively stronger p pi-d pi bonding.

The molecule having one p pi - p pi and two p pi - d pi bonds is