Question

2
5)
is a basic oxide.
b) K20
a) CO2
c) S02
d) A1203​

Answer 1

K2O

because when metals react with oxygen they form basic oxides.

K2O is Potassium Oxide

Potassium is a metal.

Potassium + Oxygen -) Potassium Oxide

K2 + O2 -) K2O

NOTE: I HAVE NOT BALANCED THE EQUATION!