The liquified metal expanding on solidification is :

Options

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

Answer

A

Explanation

Gallium is a chemical element in the periodic table that has the symbol Ga and atomic number 31.A rare,soft silvery metabolic poor metal,gallium is brittle at low temprature but is liquid above room temprature and can indeed melt in the hand.Gallium metal expands by 3.1 percent when it so and therefore should not be stored in either glass of metal containers.Gallium also corrodes most other metals by diffusiong into metal lattice.