Which of the following statement is incorrect ?

Options

A. The third quantum shell can hold a maximum of 18 electrons
B. An electron falling to the same energy level from any higher level always emits the same quantum of energy
C. The Balmer series of lines is in the visible region of the emission spectrum of hydrogen atom
D. The electron of hydrogen atom in its ground state remains in the first quantum shell

Answer

B

Explanation

Various high energy level de-excitations give different energy.