Consider the followng changes:
`M(s) to M(g)` . . . (1)
`M(s) to M^(2+)(g) +2e^(-)` . . . (2)
`M(g)to M^(+)(g)+e^(-)` . . . (3)
`M^(+)(g) to M^(2+)(g)+e^(-)` . . (4)
`M(g) to M^(2+)(g)+2e^(-)` . . . (5)
The second ionization energy of M could be calculated from the enrg values associated with:

Options

A. `1+3+4`
B. `2-1+3`
C. `1+5-3`
D. `5-3`

Answer

D

Explanation

`M_((g)) underset(IE_(1)) overset(e^(-)) to M_((g))^(+) underset(IE_(II)) overset(e^(-))to M_((g))^(+2)`
`M_((g)) to M_((g))^(+2) +2e^(-)`
`M_((g)) to M_((g))^(+) +e^(-)`
--------------------------------------
`" "to M_((g))^(+2) - M_((g))^(+) +e^(-)`
or `M^(+) to M^(+2) +e^(-)`