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Electronic configuration of elements and extra stability of half-filled and completely filled orbitals Concepts for JEE

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Quick answer

Master Electronic configuration of elements and extra stability of half-filled and completely filled orbitals by understanding definitions, standard results, and typical JEE question patterns — then practise with syllabus-aligned MCQs on Goodmarks.

Build clear conceptual foundations for Electronic configuration of elements and extra stability of half-filled and completely filled orbitals before speed practice. This guide covers what JEE expects and how to test yourself with MCQs.

Concept explainer

Electronic configuration of elements and extra stability of half-filled and completely filled orbitals is a core JEE Main Chemistry subtopic under Atomic Structure. Master the definitions, standard results, and typical MCQ patterns tested in JEE Main and Advanced.

Key points

  • Understand the definition and scope of Electronic configuration of elements and extra stability of half-filled and completely filled orbitals in the JEE syllabus
  • Memorise key formulas and standard results linked to Electronic configuration of elements and extra stability of half-filled and completely filled orbitals
  • Practise 20–40 syllabus-aligned MCQs with step-by-step solutions

JEE tips

  • Revise Electronic configuration of elements and extra stability of half-filled and completely filled orbitals with a one-page formula sheet before attempting mixed tests
  • After each practice set, log mistakes specific to Electronic configuration of elements and extra stability of half-filled and completely filled orbitals and reattempt after 48 hours

Common trap

Students often rush Electronic configuration of elements and extra stability of half-filled and completely filled orbitals questions without checking units, sign conventions, or boundary conditions — always verify assumptions before calculating.

Syllabus context

Part of Atomic Structure in JEE Main Chemistry.

Free sample questions

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Q1ChemistryUnit 2: Atomic Structure
element has one electron in the outermost shell and attains duplet configuration after accepting one more electron and attains stability.
Q2ChemistryUnit 2: Atomic Structure
Statement I: Ground state electronic configuration of chromium atom is (Ar)4s13d5(A r) 4 s^{1} 3 d^{5} Statement II: Exchange energy is more wtih (Ar)4s13d5(\boldsymbol{A} \boldsymbol{r}) \boldsymbol{4} \boldsymbol{s}^{1} \boldsymbol{3} \boldsymbol{d}^{5} then (Ar)4s23d4(\boldsymbol{A} \boldsymbol{r}) \boldsymbol{4} \boldsymbol{s}^{2} \boldsymbol{3} \boldsymbol{d}^{4}
Q3ChemistryUnit 2: Atomic Structure
Which of the following has ns2np6nd10n s^{2} n p^{6} n d^{10} (n+1)s0(n+1) s^{0} configuration?
Q4ChemistryUnit 2: Atomic Structure
Which of the properties of isotopes of an element is different?
Q5ChemistryUnit 2: Atomic Structure
Which of the following is not true for 1H1,1H2,1H3?\mathbf{1} \boldsymbol{H}^{1}, \mathbf{1} \boldsymbol{H}^{2}, \mathbf{1} \boldsymbol{H}^{3} \mathbf{?}
Q6ChemistryUnit 2: Atomic Structure
The stability of ferric ion is due to
Q7ChemistryUnit 2: Atomic Structure
Which amongst the following can lose 2 electrons to acquire the configuration of argon?
Q8ChemistryUnit 2: Atomic Structure
Electronic configuration [Kr]4d10[\boldsymbol{K} \boldsymbol{r}] \boldsymbol{4} \boldsymbol{d}^{10} belongs to:

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