Question

An element reacts with oxygen to form an oxide which dissolves in water to form a solution that turns red litmus blue. The oxide dissolves in dil. HCI. Identify the element as metal or non-metal.

Answer 1

the element is a metal as its oxide dissolves in dil. HCL .a non metal cannot form an oxide

Answer 2

Answer:

The element is the metal.

Explanation:

Basic oxides or bases turn red litmus blue. It is given that the element reacts with oxygen to form oxides. Hence, the element has to be a metal since non metallic oxides are not basic in nature. Again, it is said that the element dissolves in water and HCl .

It’s is said that the element in left side of a periodic table dissolves in water and aqueous solution of acids. Hence, the element is mostly like to be metal and it is magnesium

$M g+O 2 \rightarrow M g O 2$