M is a metal above hydrogen in the activity series and its oxide has the formula MO
a ) What kind of combination exists between M and O?
b) How many electrons are there in the outermost shell of M?
c ) Name the group to which M belongs
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Answer:
1 ionic compound .
The valency of O is−2. As 2 atoms of M are combined in M 2 O the valency of M is +1. Hence M has 1 electron in its valence shell.
3.alkali metal grup which is grup 1
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