1.The process that is NOT endothermic in nature is:a.Ar(g)+e−→Ar−(g)\text{Ar(g)} + e^- \rightarrow \text{Ar}^-\text{(g)}Ar(g)+e−→Ar−(g)b.H(g)+e−→H−(g)\text{H(g)} + e^- \rightarrow \text{H}^-\text{(g)}H(g)+e−→H−(g)c.O−(g)+e−→O2−(g)\text{O}^-\text{(g)} + e^- \rightarrow \text{O}^{2-}\text{(g)}O−(g)+e−→O2−(g)d.Na(g)→Na+(g)+e−\text{Na(g)} \rightarrow \text{Na}^+\text{(g)} + e^-Na(g)→Na+(g)+e−Login to continueOnly logged in users canattempt or see the solution.
