Question

What is meant by "the energy of an electron is quantized"?

Answer 1

Answer:

a and B are correct

Explanation:

The energy of an electron associated with one shell around the nucleus is quantized. And is given by the formula

$E= -\frac{13.6 eV}{n^2}$.

where n= shell number 1,2,3...

It is true that energy of an electron cab be measured and Each electron around an atom has a discrete measure of energy associated with it. Moreover, quantity of electron energy remains constant in a shell and changes only when the electron changes its shell.

hence C is incorrect.

Answer 2

Answer: B: Each electron around an atom has a discrete measure of energy.