Question

The maximum number of electrons that can have principal quantam number n =3

Answer 1

Answer:

The maximum number of electrons which can have a principal quantum number (n) = 3 will be the total number of electrons present in the third main shell of an atom. According to Bohr's model, the total number of electrons that can be filled in a shell can be determined by the formula 2n^2

Therefore the total number of electrons in the third shell will be

n=3

» 2n^2

or, (2)3^2

or, 2(9)

or, 18

18 electrons

Answer 2

Answer:

No two electrons in an atom can have the same set of quantum numbers. The first quantum number is the principle quantum number , which is n=3 . This means the electron is in the third energy level (shell). The second quantum number, the angular momentum , is l=2 , and means the electron is in the d sublevel (subshell).