Question

what happens when Mg reacts with o2

Answer 1

MgO bnega qki Mg ki valency +2 h or oxygen ki -2 h

Answer 2

Hey brainly,

When Mg reacts with O2 it forms MgO as when alkaline metals(M) reacts with O2 gives monoxides of respective metals .
As per valency rule,
Mg-+2
O-(-2)


hope it helps u
^-^