Chemistry - PERIODIC TABLE Question with Solution | TestHub

Consider the following reactions:

(P) $\mathrm{M}(s)\to \mathrm{M}(g)$

(Q) $\mathrm{M}(s)\to {\mathrm{M}}^{2+}(g)+2{\mathrm{e}}^{-}$

(R) $\mathrm{M}(g)\to {\mathrm{M}}^{+}(g)+{\mathrm{e}}^{-}$

(S) ${\mathrm{M}}^{+}(g)\to {\mathrm{M}}^{2+}(g)+{\mathrm{e}}^{-}$

(T) $\mathrm{M}(g)\to {\mathrm{M}}^{2+}(g)+2{\mathrm{e}}^{-}$

The second ionisation energy of M could be calculated from energy values associated with :