1.

How many following total number of process are endothermic {:(O,rarr,O^(-),N,rarr,N^(-),CL^(+),rarr,Cl,),(N,rarr,N^(+),Ne,rarr,Ne^(+),P,rarr,P^(+),),(S,rarr,S^(+),Be,rarr,Be^(+),Se,rarr,Se^(-2),):}

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ANSWER :7


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