In its crystalline structure, every Si or Ge atoms are attached to other atoms by

Options

A. coordinate bond
B. electrovalent bond
C. covalent bond
D. hydrogen bond

Answer

C

Explanation

Si and Ge have four valence electrons. In its crystalline structure, every Si or Ge atom tends to share one of its four valence electrons with each of its four nearest neighbour atoms and also to take share of one electron from each such neighbour.
These shared electron pairs are referred to as forming a covalent bond or simply a valence band.