Periodic Table & Periodicity JEE Main PYQs PDF, 2020–2026

Watch: Periodic Table & Periodicity complete chapter (animated)

Periodic Table and periodicity complete chapter, animated, for JEE Main 2027 and Class 11 Chemistry (NCERT Ch 3). s, p, d and f blocks, atomic and ionic radius, ionisation enthalpy, electron gain enthalpy, electronegativity and the exceptions that JEE loves to ask.

Key moments

1. 0:00The gallium puzzle
2. 1:10Why a periodic table
3. 3:53s, p, d and f blocks
4. 6:14Atomic radius
5. 8:24Ionic radius
6. 10:09Ionization enthalpy
7. 11:56Electron gain enthalpy
8. 13:34Electronegativity
9. 15:07Exceptions + one-screen summary

Periodic Table & Periodicity questions per year

in the free PDF asked, not in the PDFThe PDF only has questions we can print in full with a checked answer, so it holds 122 of the 124 asked.

Topic-wise weightage by year

How many Periodic Table & Periodicity questions each topic had in every JEE Main year (all shifts), counting every question asked, including ones not in the PDF. Darker cells mean more questions.

Swipe the table sideways for older years.

Newest questions (2026)

The 12 newest of the 18 JEE Main 2026 Periodic Table & Periodicity questions in the free PDF, latest shift first.

1. JEE Main 2026 · 8 Apr · Shift 2 · Ionisation Enthalpy

   $\text{ Match List - I with List - II.}$

   List - I Electronic configuration of neutral atom (where $n=2$ )		List - II $1^{{\text{st}}}$ Ionization Energy ( ${\mathbf{k}\mathbf{J}\ \mathbf{m}\mathbf{o}\mathbf{l}}^{{-{\mathbf{1}}}}$ )
   A.	${\mathrm{ns}}^{2}$	I.	2080
   B.	${\mathrm{ns}}^{2}{\mathrm{np}}^{1}$	II.	899
   C.	$ns^{2}np^{3}$	III.	800
   D.	$ns^{2}np^{6}$	IV.	1402

   Choose the correct answer from the options given below :

   Solve it online →

2. JEE Main 2026 · 6 Apr · Shift 1 · Ionisation Enthalpy

   First and second ionization enthalpies of lithium are $520{\ \mathrm{kJ}}{\ \mathrm{mol}}^{{-1}}$ and $7297{\ \mathrm{kJ}}{\ \mathrm{mol}}^{{-1}}$ respectively. Energy required to convert 3.5 mg lithium (g) into ${\mathrm{Li}}^{{2+}}({\mathrm{g}})\left[{\mathrm{Li}}({\mathrm{g}})\rightarrow {\mathrm{Li}}^{{2+}}({\mathrm{g}})\right]$ is $\_\_\_\_$ ${\mathrm{kJ}}{\mathrm{mol}}^{{-1}}$. (nearest integer)

   [Molar mass of ${\mathrm{Li}}=7{\ \mathrm{g}}{\ \mathrm{mol}}^{{-1}}$ ]

   Solve it online →

3. JEE Main 2026 · 6 Apr · Shift 2 · Modern Periodic Law

   In a period, the first ionisation enthalpy of the element at extreme left and the negative electron gain enthalpy of the extreme right element, except noble gases, are respectively.

   Solve it online →

4. JEE Main 2026 · 5 Apr · Shift 2 · Ionisation Enthalpy

   Given below are two statements :

   Statement I : The number of pairs among $[{\mathrm{Al}}_{2}{\mathrm{O}}_{3},{\mathrm{Cr}}_{2}{\mathrm{O}}_{3}],[{\mathrm{Cl}}_{2}{\mathrm{O}}_{7},{\mathrm{Mn}}_{2}{\mathrm{O}}_{7}],[{\mathrm{Na}}_{2}{\mathrm{O}},{\mathrm{V}}_{2}{\mathrm{O}}_{3}]$ and $[{\mathrm{CO}},{\mathrm{N}}_{2}{\mathrm{O}}]$ that contain oxides of same nature (acidic, basic, neutral or amphoteric) is 4 .

   Statement II : Among ${\mathrm{Na}}_{2}{\mathrm{O}},{\mathrm{Al}}_{2}{\mathrm{O}}_{3},{\mathrm{CO}}$ and ${\mathrm{Cl}}_{2}{\mathrm{O}}_{7}$, the most basic and acidic oxides are ${\mathrm{Na}}_{2}{\mathrm{O}}$ and ${\mathrm{Cl}}_{2}{\mathrm{O}}_{7}$, respectively.

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

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5. JEE Main 2026 · 5 Apr · Shift 1 · Ionisation Enthalpy

   Given below are two statements:

   Statement I: The correct order of electronegativity of fluorine, oxygen and nitrogen is ${\mathrm{F}}>{\mathrm{O}}>{\mathrm{N}}$.

   Statement II: The oxidation state of oxygen in ${\mathrm{OF}}_{2}$ is +2 and in ${\mathrm{Na}}_{2}{\mathrm{O}}$ is -2 .

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

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6. JEE Main 2026 · 4 Apr · Shift 2 · Ionisation Enthalpy

   The $1^{{\text{st}}}$ ionization enthalpy for Mg is $+737{\ \mathrm{kJ}}/{\mathrm{mol}}$. The most probable estimated value of the $2^{{\text{nd}}}$ ionization enthalpy of Mg is $\_\_\_\_$ .

   Solve it online →

7. JEE Main 2026 · 2 Apr · Shift 1 · Ionisation Enthalpy

   Given below are two statements :

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

   Statement (II) : Among Ca, Al, 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 :

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8. JEE Main 2026 · 2 Apr · Shift 2 · Ionisation Enthalpy

   The correct set that contains all kinds (basic, acidic, amphoteric and neutral) of oxides is :

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9. JEE Main 2026 · 28 Jan · Shift 2 · Modern Periodic Law

   Consider the elements N, P, O, S, Cl and F. The number of valence electrons present in the elements with most and least metallic character from the above list is respectively.

   Solve it online →

10. JEE Main 2026 · 28 Jan · Shift 1 · Atomic and Ionic Radii

    In period 4 of the periodic table, the elements with highest and lowest atomic radii are respectively.

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11. JEE Main 2026 · 24 Jan · Shift 2 · Ionisation Enthalpy

    The correct order of ${\mathrm{C}},{\mathrm{N}},{\mathrm{O}}$ and F in terms of second ionisation potential is

    Solve it online →

12. JEE Main 2026 · 24 Jan · Shift 1 · Modern Periodic Law

    Given below are two statements :

    Statement I : ${\mathrm{K}}>{\mathrm{Mg}}>{\mathrm{Al}}>{\mathrm{B}}$ is the correct order in terms of metallic character.

    Statement II : Atomic radius is always greater than the ionic radius for any element.

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

    Solve it online →

Practise the 2026 Periodic Table & Periodicity questions online

Sample questions from recent papers

The free PDF above has all 122 questions grouped by topic, with an answer key.

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