JEE Main 2020 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 5 September 2020, Shift 1, Chemistry Q33

Question 33 of 75 in this shift, Chemistry question 8 of 25.

In the sixth period, the orbitals that are filled are :

(1)6s, 6p, 6d, 6f
(2)6s, 5f, 6d, 6p
(3)6s, 5d, 5f, 6p
(4)6s, 4f, 5d, 6pOfficial answer

Official answer

Option 4

NTA final key (Sep 2020).

Chapter: Classification of Elements and Periodicity in Properties
Topic: Quantum Numbers
Idea tested: Aufbau Principle and n+l Rule

Same idea in other shifts

Asked 8× in all

4 Apr 2026, Shift 1 · Q53Which of the following is correct set of $4$ quantum numbers of $19^{\text{th}}$ electron in Chromium (Atomic number $=24$ ) in accordance…MediumSingle correct
5 Apr 2026, Shift 1 · Q52Arrange the following atomic orbitals of multi electron atoms in order of increasing energy. A. $n = 3, l = 2, m = +1$ B.…MediumOther
5 Apr 2026, Shift 2 · Q52Which of the following statement(s) is/are true ? A. If two orbitals have the same value of $(n+l)$ , the orbital with lower value of n…MediumOther
9 Apr 2024, Shift 1 · Q61Compare the energies of following sets of quantum numbers for multielectron system. (A) $n=4, l=1$ (B) $n=4, l=2$ (C) $n=3, l=1$ (D)…EasySingle correct
27 Jul 2022, Shift 2 · Q61The correct decreasing order of energy for the orbitals having, following set of quantum numbers : (A) $n=3$ , $l=0$ , $m=0$ (B) $n=4$ ,…EasySingle correct
29 Jul 2022, Shift 2 · Q62Given below are the quantum numbers for 4 electrons. A. $n = 3, l = 2, m_l = 1, m_s = +1/2$ B. $n = 4, l = 1, m_l = 0, m_s = +1/2$ C.…MediumSingle correct
22 Jul 2021, Shift 2 · Q53Number of electrons that Vanadium (Z=23) has in p-orbitals is equal to ________.EasyNumerical value

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.