if manganese has a valency of 2...then why does it form mno2 when it reacts with oxygen
mean while mg2+o2=mgo
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Answered by
1
because oxygen also has valency of -2.
here magnesium gives 2 electrons and oxygen accepts the 2 electron
hence compound is formed
here magnesium gives 2 electrons and oxygen accepts the 2 electron
hence compound is formed
KarthikHariiiiiii:
so (mn+2)+(o-2)=mno2?
even mg has a valency of +2...then why does it produce mgo when reacted with oxygen
bro why is it not mg02...like mno2
Answered by
5
your answer matevalency of a element is constant and solely depends on the no. Of valence electrons and in the case of magnesium it has an electronic configuration of 2,8,2..So the no. Of valence electrons are 2 and hence the valency is 2..
It is the oxidation state that changes and in this case (MgO),oxygen being electronegative has an oxidation state of -2 and that of magnesium is +2.
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