Question

Why silicon and germanium is a semiconductor ?

Answer 1

Answer:

Because they are metalloids.

Explanation:

Metalloids have more resistivity (10^-2 to 10^-5 ohm metre) as compared to the metals.

Answer 2

Explanation:

each has 4 valence electrons but germanium will at a given temperature

have more free electrons and have high conductivity. silicon is byfa far the most widely used semiconductor for electronic because it have high temperature than geranium