Question

Give the correct order of initials True (T) or Flase (F) for following statements:
(I) If an electron has zero magnetic quantum number, then it corresponds to every subshell.
(II) A d-orbital can accommodate a maximum 10 electrons only.
(III) In orbital diagram, Pauli's exclusion principle is violated.
(IV) Minimum number of electrons having $s=-\frac{1}{2}$ in phosphorus is 9.

• A. FTFT
• B. TFTF
• C. TTFF
• D. TTTT

Answer 1

The correct option is C TTFF

(I) Value of $m_l$ varies from $-l$ to $+l$. So it is not always that $m_l=0$ corresponds to s-orbital only.

(II) d-subshell has 5 orbitals so it can accomodate maxiumum of 10 electrons.

(III) The electronic arrangement, does not violate Pauli's exclusion principle since each orbital has a maximum of two electrons with opposite spin.

(IV) Ground state configuration of $P$ is given below.

Therefore the minimum number of electrons having $s=-\frac{1}{2}$ is 6.