The maximum number of electrons in an atom in which the last electron filled has the quantum numbers n=3, I= 2 and m=-1 is

Question

The maximum number of electrons in an atom in which the last electron filled has the quantum numbers n=3, I= 2 and m=-1 is (A) 17 (B) 27 (C) 28 (D) 30

Tardigrade Admin · Accepted Answer

n=3 and I=2 means 3 d-orbital. Since five orientations of d-orbitals are degenerate, m=-1 can be assigned to any one. For maximum number of electrons as asked, answer should be atomic number 30 .

Q. The maximum number of electrons in an atom in which the last electron filled has the quantum numbers $n = 3, I = 2$ and $m = - 1$ is

17

27

28

30

$n = 3$ and $I = 2$ means $3 d$ -orbital.
Since five orientations of $d$ -orbitals are degenerate, $m = - 1$ can be assigned to any one.
For maximum number of electrons as asked, answer should be atomic number $30$ .

Q. The maximum number of electrons in an atom in which the last electron filled has the quantum numbers n=3,I=2 and m=−1 is

17

27

28

30

n=3 and I=2 means 3d-orbital. Since five orientations of d-orbitals are degenerate, m=−1 can be assigned to any one. For maximum number of electrons as asked, answer should be atomic number 30 .

Q. The maximum number of electrons in an atom in which the last electron filled has the quantum numbers $n = 3, I = 2$ and $m = - 1$ is

$n = 3$ and $I = 2$ means $3 d$ -orbital.
Since five orientations of $d$ -orbitals are degenerate, $m = - 1$ can be assigned to any one.
For maximum number of electrons as asked, answer should be atomic number $30$ .