What is the bond order of `H_(2)^(-)` ion ?

The bond order of He_2^(+) ion is -

The bond order in O_(2)^(-) ion is

(a) Dimethyl ether and ethanol have same molecular weight but their volatilities are different-explain. (b) find out the bond order of H_(2)^(+) ion.

(i) Why are the bond angles of NH_(3) and H_(2)O less than the normal values of the regular tetrahedron bond angles inspite of being sp^(3) hybridised? (ii) Find out the bond order of H_(2)^(+) ion.

The bond order of He^(2+) ion is-

The bond order of He^(2+) ion is-

Find out the bond order of H_2^+ ion.