back to directory
NEET CHEMISTRYStructure of AtomEasy

Question

The orientation of an atomic orbital is governed by:

A

Azimuthal quantum number

B

Spin quantum number

C

Magnetic quantum number

D

Principal quantum number

Step-by-Step Solution

The four quantum numbers describe different aspects of an electron in an atom:

  1. Principal quantum number (n): Determines the main energy level and the size of the orbital.
  2. Azimuthal quantum number (l): Determines the shape of the orbital (e.g., spherical for s, dumbbell for p).
  3. Magnetic quantum number (mₗ): Determines the spatial orientation of the orbital relative to a standard set of coordinate axes. For a given subshell l, there are (2l + 1) possible values of mₗ, corresponding to the different orientations (e.g., p_x, p_y, p_z or the d-orbitals d_{xy}, d_{z^2} discussed in Crystal Field Theory ).
  4. Spin quantum number (mₛ): Describes the spin orientation of the electron itself.

Exam Context & Concepts Covered

This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from Structure of Atom. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

CHEMISTRYStructure of Atomorientationatomicorbitalgoverned

More Structure of Atom Questions

View all

In hydrogen atom, what is the de Broglie wavelength of an electron in the second Bohr orbit? [Given that Bohr radius, $a_0 = 52.9$ pm]

A.211.6 pm
B.211.6 $\pi$ pm
C.52.9 $\pi$ pm
D.105.8 pm
MediumSolve

Maximum number of electrons in a subshell with l = 3 and n = 4 is:

A.14
B.16
C.10
D.12
EasySolve

If the principal quantum number n=6, the correct sequence of filling of electrons will be:

A.ns → np → (n-1)d → (n-2)f
B.ns → (n-2)f → (n-1)d → np
C.ns → (n-1)d → (n-2)f → np
D.ns → (n-2)f → np → (n-1)d
MediumSolve

The measurement of the electron position is associated with an uncertainty in momentum which is equal to $1 \times 10^{-18} \text{ g cm s}^{-1}$. The uncertainty in velocity of the electron will be: (mass of an electron is $9 \times 10^{-28} \text{ g}$)

A.1 × 10⁹ cm s⁻¹
B.1 × 10⁶ cm s⁻¹
C.1 × 10⁵ cm s⁻¹
D.1 × 10¹¹ cm s⁻¹
EasySolve

What is the maximum number of orbitals that can be identified with the following quantum numbers? n = 3, l = 1, m = 0

A.1
B.2
C.3
D.4
EasySolve

The relation between $n_m$ ($n_m$ = number of permissible values of magnetic quantum number, $m_l$) for a given value of azimuthal quantum number ($l$) is:

A.$n_m = l + 2$
B.$l = \frac{n_m - 1}{2}$
C.$l = 2n_m + 1$
D.$n_m = 2l^2 + 1$
EasySolve

Which one of the following ions has electronic configuration [Ar]3d⁶? (At. no: Mn = 25, Fe = 26, Co = 27, Ni = 28)

A.Ni³⁺
B.Mn³⁺
C.Fe³⁺
D.Co³⁺
MediumSolve

How many electrons can fit in the subshell for which n = 3 and l = 1?

A.2
B.6
C.10
D.14
EasySolve

Why 32,000+ students choose TopperSquare

Everything you need to crack NEET

15,000+ Chapter MCQs

Physics, Chemistry, Biology — chapter-wise, topic-wise practice

AI Performance Analytics

Know your weak topics. Get a personalised study plan.

Full NEET Mock Tests

180 questions, timed, with detailed score analysis

PYQ Sets 2010–2024

15 years of past papers with solved explanations

Start Practising Free

No credit card · 30-second signup · Free forever plan included

This neet chemistry practice question is part of the TopperSquare free question bank. TopperSquare offers 15,000+ chapter-wise NEET MCQs across Physics, Chemistry, and Biology with detailed step-by-step explanations, full mock tests, NEET PYQs (2010–2024), and an AI-powered performance analytics dashboard. browse all neet practice questions → · practice chemistry sets →

Explore more subjects:Physics MCQs•Chemistry MCQs•Biology MCQs•Botany MCQs•Zoology MCQs•NEET Mock Tests•NEET PYQs