The crystalline form of white Tin is:

Explanation

Option C is correct.The crystalline form of white tin is tetragonal.Tin has two crystalline forms: white tin and gray tin.White tin is the stable form of tin at temperatures above 13.2 °C.It has a tetragonal crystal structure, with each atom surrounded by four other atoms.Gray tin is the stable form of tin at temperatures below 13.2 °C.It has a body-centered cubic crystal structure,with each atom surrounded by eight other atoms.The tetragonal crystal structure of white tin is responsible for its brittleness.The atoms in the crystal are arranged in a regular pattern,but the pattern is not as strong as the pattern in the body-centered cubic crystal structure of gray tin.This makes white tin more likely to break when it is subjected to stress.