Question

a colorless gas that cannot be separated into simpler substances using physical means and that reacts with the metal to produce both a magnesium oxygen compound and a magnesium nitrogen compound.

hetro
homo
compound
element

Answer 1

Since we are thinking of a gas which can be separated by physical means so it can't be any homogeneous mixture such as air.

For a gas to react with metal and produces metal oxygen compound and with nitrogen to produce metal nitrogen compound. Their is possibility that gas is composed of oxide of nitrogen.

Thus, it should fall under category of compound.

Hence, option C is correct.

Hope this helps you