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Is i correct to say that in the reaction between magnesium and oxygen to form magnesium oxide magnesium gets oxidised as it loses electrons and oxygen gets reduced as it loses electrons?

Asked by Viswanath 23rd September 2013, 6:01 PM
Answered by Expert
Yes. The reaction between magnesium metal and oxygen to form magnesium oxide involves the oxidation of magnesium.

When magnesium reacts with oxygen, each magnesium atom gives two electrons to oxygen. The positive magnesium ions (Mg2+) then combine with negative oxygen ions (O2-) to form solid magnesium oxide (MgO). In this reaction, magnesium (the reducing agent) is oxidized, and oxygen (the oxidizing agent) is reduced.

In the course of this reaction, each magnesium atom loses two electrons to form Mg 2+ ion.

Mg  Mg2+ + 2 e-

And, each O 2 molecule gains four electrons to form a pair of O 2- ions.

O2 + 4 e-  2 O2-

Answered by Expert 23rd September 2013, 6:36 PM
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