Question

which is a metal sodium or sulphur explain its reaction with oxygen​

Answer 1

Sodium is a metal for its property of donating an electron.

4Na + O2 -------> 2Na2O

Forms,

Sodium Oxide.

Answer 2

Sulphur is a non-metal.

Sodium (Na) is a metal (i.e.) electro-positive element, that loses its electrons and forms a positively charges ion.

It is highly reactive in nature. So, it is not available in its pure form.

When sodium metal is exposed to air (at room temperature), it readily reacts with oxygen and forms Sodium oxide.

Chemical reaction is as follows:

4Na      +      $O_{2}$     --------->       $2Na_{2} O$

When sodium is heated with oxygen at high pressure, then sodium superoxide ( NaO$_{2}$ ) will be formed.