Question

An element x forms and oxide which turns red litmus blue identify whether x is a metal or nonmetal

Answer 1

✔For example x = magnesium (Mg) .When it reacts with oxygen it becomes magnesium oxide (MgO).

✔When this is dissolved in water it becomes magnesium hydroxide Mg(OH)2.

✔It is basic in nature. It turns red litmus blue. Thus it is a metal.

A base is known to turn a red litmus paper to blue.

The element discussed in the question is a metal because usually metals form oxides that are basic.

Some of these metals dissolve in water to form metal hydroxides, which in turn red litmus papers to blue.