JEE Advanced 2014 · Paper 1 · Chemistry Q37

← JEE Advanced 2014 · Paper 1

ChemistryInteger+3Question 37 of 60

In an atom, the total number of electrons having quantum numbers $n=4$ , $|m_l|=1$ and $m_s=-\frac12$ is

Your answer

Answer and worked solution

Official answer: 6

Orbitals with $n=4$ and $m_l=\pm1$ . $l$ can be 1, 2 or 3 (not 0, which has only $m_l=0$ ). Each of these has one orbital with $m_l=+1$ and one with $m_l=-1$ : $3\times2=6$ orbitals.

Spin. Each orbital holds one electron with $m_s=-\frac12$ .

Answer: 6

Topics:Quantum numbers

← Previous question Next question →

JEE Advanced 2014 · Paper 1, Chemistry question 37