Question

Which of the following statements are true regarding quantum numbers?

• A. $l$ determines the spin of an electron
• B. $l$ takes integer values from 0 to (n-1) for each value of n
• C. ${\text{m}}_l$ determines the number of orbitals present in an atom
• D. $m_l$ takes integer values from -$l$ to +$l$ for each value of $l$

Answer 1

Answer: (B), (C), (D)

The correct options are
B $l$ takes integer values from 0 to (n-1) for each value of n
C ${\text{m}}_l$ determines the number of orbitals present in an atom
D $m_l$ takes integer values from -$l$ to +$l$ for each value of $l$

Quantum numbers indicate the probability of finding an electron in the space around the nucleus.

$\bullet$ The overall size and energy of an orbital is determined by principle quantum number$\left(\text{n}\right)$.

$\bullet$ The value of azimuthal quantum number$\left(l\right)$ represents the subshell. For each value of $\text{n}$, $l$ has integer values from o to n-l

$\bullet$ The total number of orbitals and their orientation is determined by magnetic quantum number$(m_l$).

For each value of $l$, $m_l$ takes the values from $-l$ to $+l$.