Chemistry - Atomic Structure Question with Solution | TestHub

ChemistryAtomic StructureQuantum NumbersMedium2 minQB

ChemistryMediumsingle choice

Which of the following azimuthal quantum number is not observed for any electron in any $4^{th}$ period element :-

Options:

Answer:

Solution:

The azimuthal quantum number, $l$ , ranges from $0$ to $n - 1$ . For the 4th period ( $n = 4$ ), $l$ can be $0, 1, 2, 3$ . However, 4th period elements only fill up to the $4 p$ subshell (for main group elements) or $3 d$ subshell (for transition metals). The $4 f$ subshell ( $l = 3$ ) is not occupied in the 4th period.

The correct answer is D.

Stream:JEESubject:ChemistryTopic:Atomic StructureSubtopic:Quantum Numbers

⏱ 2mℹ️ Source: QB

Doubts & Discussion

Loading discussions...