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Question
Out of sodium and sulphur which is a metal? Explain its reaction with the oxygen.
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Solution
Out of sodium and sulphur, sodium is a metal. so sodium reacts with oxygen to form sodium oxide.
\[\ce{\underset{Sodium}{4Na(s)} + \underset{Oxygen}{O2(g)} -> \underset{Sodium oxide}{2Na2O(s)}}\]
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