1.

Select the process having exothermic process :-

Answer»

`S_((g))^(-)toS_((g))^(-2)`
`Na_((g))^(+)+Cl_((g))^(-)toNaCl_((s))`
`N_((g))toN_((g))^(-)`
`Al_((g))^(+2)toAl_((g))^(+3)`

Answer :C


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