Which of the following is most commonly used in photo-electrical cells?

Question

Which of the following is most commonly used in photo-electrical cells? (A) Francium (B) Silicon (C) Ceasium (D) Lithium

Tardigrade Admin · Accepted Answer

Ceasium is the most electropositive element of the periodic table as its ionisation energy is very less. Hence, it can lose electron very easily. Due to this property it is used in photoelectric cells.

Q. Which of the following is most commonly used in photo-electrical cells?

Francium

Silicon

Ceasium

Lithium

Ceasium is the most electropositive element of the periodic table as its ionisation energy is very less. Hence, it can lose electron very easily. Due to this property it is used in photoelectric cells.