The JEE Main Chemistry section requires speed and accuracy, along with a thorough understanding of the Trends in periodic table. This article provides a set of JEE Main PYQs on Trends in periodic table to help you understand the topic and improve your problem-solving skills with the help of detailed solutions by ensuring conceptual clarity, which will help you in the JEE Main 2026 preparation.
Whether you're revising the basics or testing your knowledge, these JEE Main PYQs will serve as a valuable practice resource.
The JEE Main 2026 exam is likely to continue on the same pattern as JEE Main 2025. Out of 90 questions, students can expect a fair mix from all three subjects. To get an edge, going through JEE Main previous year questions (PYQs) is one of the best strategies.
Also Read
JEE Main PYQs on Trends in Periodic Table
1.
The correct order of ionisation enthalpy for Li, Na, Cl, F is:- Na < Li < Cl < F
- Li < Na < Cl < F
- Na < Li < F < Cl
- F < Cl < Li < Na
2.
Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: The first ionization enthalpy for oxygen is lower than that of nitrogen.
Reason R: The four electrons in 2p orbitals of oxygen experience more electron-electron repulsion.
In the light of the above statements, choose the correct answer from the options given below.- Both A and R are correct and R is the correct explanation of A
- Both A and R are correct but R is NOT the correct explanation of A
- A is correct but R is not correct
- A is not correct but R is correct
3.
Given below are two statements:
Statement I: The metallic radius of Al is less than that of Ga.
Statement II: The ionic radius of Al\(^{3+}\) is less than that of Ga\(^{3+}\).
In the light of the above statements, choose the most appropriate answer from the options given below:- Both Statement I and Statement II are correct
Statement I is Incorrect but Statement II is Correct
Statement I is Correct but Statement II is Incorrect
- Both Statement I and Statement II are incorrect
4.
The correct order of the atomic radii of $C, Cs, Al$ and $S$ is :- $S < C < Al < Cs$
- $S < C < Cs < Al$
- $C < S < Cs < Al$
- $C < S < Al < Cs$
5.
Given below are two statements :
Statement I : The decrease in first ionization enthalpy from B to Al is much larger than that from Al to Ga.
Statement II : The d orbitals in Ga are completely filled. In the light of the above statements,
choose the most appropriate answer from the options given below- Statement I is incorrect but statement II is correct
- Both the statements I and II are correct
- Both the statements I and II are incorrect
- Statement I is correct but statement II is incorrect
6.
The correct statements from the following are:
(A) The decreasing order of atomic radii of group 13 elements is Tl $>$ In $>$ Ga $>$ Al $>$ B.
(B) Down the group 13 electronegativity decreases from top to bottom.
(C) Al dissolves in dil. HCl and liberate H$_2$, but conc. HNO$_3$ renders Al passive by forming a protective oxide layer on the surface.
(D) All elements of group 13 exhibits highly stable +1 oxidation state.
(E) Hybridisation of Al in [Al(H$_2$O)$_6$]$^{3+}$ ion is sp$^3$d$^2$.
Choose the correct answer from the options given below.- (C) and (E) only
- (A), (C) and (E) only
- (A), (B), (C) and (E) only
- (A) and (C) only
7.
Match List -I with List-II
LIST-I (Atomic number) LIST-II (Block of periodic table) (A) 37 (K) I. p-block (B) 78 (Pt) II. d-block (C) 52 (Te) III. f-block (D) 65 (Tb) IV. s-block Choose the correct answer from the options given below:
- A - IV, B - II, C - I, D - III
- A - IV, B - III, C - II, D - I
- A - I, B - III, C - IV, D - II
- A - II, B - IV, C - I, D - III
8.
The process that is $NOT$ endothermic in nature is :-- $Ar _{( g )}+ e ^{-} \rightarrow Ar _{( g ) }^{-}$
- $H _{( g )}+ e ^{-} \rightarrow H _{( g ) }^{-}$
- $Na _{( g )} \rightarrow Na _{ g }^{+}+ e ^{-}$
- $O _{( g )}^{-}+ e ^{-} \rightarrow O _{ ( g ) }^{2-}$
9.
Among the following anions, identify the anion which gives pale yellow precipitate with aq. AgNO3. The precipitate is partially soluble in aq. NH4OH solution.- I-
- Cl-
- Br-
- NO-2
10.
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Both rhombic and monoclinic sulphur exist as S$_8$ while oxygen exists as O$_2$.
{Reason (R): Oxygen forms $p\pi$-$p\pi$ multiple bonds with itself and other elements having small size and high electronegativity like C, N, which is not possible for sulphur.
In the light of the above statements, choose the most appropriate answer from the options given below:- Both (A) and (R) are correct and (R) is the correct explanation of (A).
- Both (A) and (R) are correct but (R) is not the correct explanation of (A).
- (A) is correct but (R) is not correct.
- (A) is not correct but (R) is correct.
11.
Given below are two statements:
Statement I: The metallic radius of Na is 1.86 Å and the ionic radius of Na$^+$ is lesser than 1.86 Å.
Statement II: Ions are always smaller in size than the corresponding elements.
In the light of the above statements, choose the correct answer from the options given below:- Statement I is correct but Statement II is false
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
- Statement I is incorrect but Statement II is true
Comments