The liquefied metal expanding on soildification is

Options

A. `Ga`
B. `Al`
C. `Zn`
D. `Cu`

Answer

1

Explanation

`Ga` (a silvery white metal ,m.p. `29.78^(@)C`) is unusual because the liquid expands ( it expands by `3.1%` on solidification) when it forms the solid i.e, the solids is less dense than the liquids ,this property is unique to `Ga,Ge` and `Bi.`That is why `Ga` can't be stored in glass vessels.