Question

Out of sodium and sulphur which is a metal?explain its reaction with the oxygen

Answer 1

sodium is metal as it lies in first group and sulphur is a non petal as it lies in 16th group

2Na+O2=2NaO

2S+O2=2SO

Answer 2

Sodium (Na) is the metal

Sodium and oxygen forms ionic bond

Na(2,8,1) -1e---------->Na(2,8)[stable octet]

O(2,6)+2e------------->O(2,8)[stable octet]

$( { na}^{ + } ) 2( {o}^{ - } )$

Na2O