Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) Which of the following is an exothermic process? - Sarthaks eConnect

Which of the following is an exothermic process?

`Na_g->Na_g^o+ +e^-`

`O_g^o+ +e^- ->O_g^(2-)`

`Cl_g^o+ +e^- ->Cl_g^(2-)`

`Na_g^o+ +e^- ->Na_g`