Start free

Chemistry · Periodicity of Elements and Periodic Properties

JEE Main 2026 — 2 April, Morning Shift — Question 47

Given below are two statements :

Statement (I) : The first ionisation enthalpy of the elements Na,Mg,Cl\mathrm{Na}, \mathrm{Mg}, \mathrm{Cl} and Ar follows the order Na>Mg>Cl>Ar\mathrm{Na}>\mathrm{Mg}>\mathrm{Cl}>\mathrm{Ar}

Statement (II) : Among Ca,Al,Fe\mathrm{Ca}, \mathrm{Al}, \mathrm{Fe} and B , the third ionisation enthalpy is very high for Ca .

In the light of the above statements, choose the correct answer from the options given below :

  1. Option A:

    Both Statement I and Statement II are true

  2. Option B:

    Both Statement I and Statement II are false

  3. Option C:

    Statement I is true but Statement II is false

  4. Option D:

    Statement I is false but Statement II is true

    Correct

Answer: D

Step-by-step solution

(i) Na<Mg<Cl<Ar→Ist \mathrm{Na}<\mathrm{Mg}<\mathrm{Cl}<\mathrm{Ar} \rightarrow \mathrm{I}^{\text {st }} ionization energy (ii) Among B, Ca, Al, Fe

Ca has maximum 3rd 3^{\text {rd }} ionization energy among given due to inert gas configuration.

Answer key and solution verified before publishing.

Practise Periodicity of Elements and Periodic Properties

Start with this question, then two more from the same chapter — with a tutor that explains every step. Free.

Solve a similar one free
Exam
JEE Main 2026
Paper
2 April, Morning Shift
Subject
Chemistry
Chapter
Periodicity of Elements and Periodic Properties
Topic
Periodicity in Chemical Properties (Ionization Energy, Electron Affinity, Electronegativity)

More Periodicity of Elements and Periodic Properties questions from this paper

Given below are two statements : Statement (I) : The first ionisation… | JEE Main 2026 PYQ with Solution · DhiX AI