Which one of the following statements is not true about H₂?

What is the best experimental technique for measuring the bond lengths within molecules when the species are in the gas phase?

In 1916, Gilbert Lewis recognised that it was possible for molecules to obey the 'octet' rule by sharing electrons.  According to Lewis theory, how many electrons does oxygen need to share to complete its octet

For which of the following molecules does octet theory work?

According to Pauling electronegativity theory, which one of the following species would be the most polar?

When two s atomic orbitals combine, which of the following bond orders is not possible from this combination whatever the filling of the corresponding orbitals.

Orbital mixing effect the orbital ordering (and filling) of which two orbitals in the molecular orbital diagrams of homonuclear diatomics which are early in the second period?

How would you expect the bond strength to change in the series C₂ to C₂^- to C₂^2-

How many unpaired electrons are there in the B₂^2- molecular orbital diagram?

Taking z as the internuclear axis and assuming that the energies of the orbitals are similar, which of the following pairs of orbitals would result in a non-bonding combination?