Question

An element A forms two oxides AO and AO2. The oxide AO is neutral whereas the oxide AO2 is acidic in nature. Would you call element A, a metal or a non-metal?

Answer 1

Element A is nonmetal .
For example :
carbon is nonmetal which forms two oxides CO and CO2.
CO is neutral and CO2 is acidic in nature.

Answer 2

ANSWER:

Element A is a non metal.

EXPLANATION:

    The element A has to be a non metal as it forms an oxide which is acidic which is a characteristic of non metals. Non metals have a property that they form acidic oxides with oxygen.

   As element A also "forms an acidic oxide" with oxygen so we can conclude that element A is a non metal. Oxides will be usually formed when a compound reacts with oxygen.