At high temperatures sulphur vapour is predominantly in the form of ${\mathrm{S}}_2$ (gas) molecules. Assuming that the molecular orbitals for third row diatomic molecules (homonuclear) are analogous to those for second-row molecules. Answer the following questions by putting correct number in the boxes provided at the bottom. 

p : The number of unpaired electrons in ${\mathrm{S}}_2$

Q : The bond order of  : 

The number of $\mathrm{\pi }$ bond(s) in ${\mathrm{S}}_2$

S : The bond order of ${\mathrm{S}}_2^{2-}$ disulphide ion formed by the gain of two electrons.