1
JEE Main 2026 (Online) 22nd January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Two p-block elements X and Y form fluorides of the type $\mathrm{EF}_3$. The fluoride compound $\mathrm{XF}_3$ is a Lewis acid and $\mathrm{YF}_3$ is a Lewis base. The hybridizations of the central atoms of $\mathrm{XF}_3$ and $\mathrm{YF}_3$ respectively are

A

$\mathrm{sp}^2$ and $\mathrm{sp}^3$

B

Both $\mathrm{sp}^3$

C

Both $\mathrm{sp}^2$

D

$\mathrm{sp}^3$ and $\mathrm{sp}^2$

2
JEE Main 2026 (Online) 22nd January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The formal charges on the atoms marked as (1) to (4) in the Lewis representation of $\mathrm{HNO}_3$ molecule respectively are

JEE Main 2026 (Online) 22nd January Morning Shift Chemistry - Chemical Bonding & Molecular Structure Question 19 English

A

$0,0,-1,+1$

B

$0,-1,0,+1$

C

$0,+1,0,-1$

D

$+1,0,0,-1$

3
JEE Main 2026 (Online) 21st January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct increasing order of C–H(A), C–O(B), C=O(C) and C≡N(D) bonds in terms of covalent bond length is :

A

D < C < B < A

B

D < C < A < B

C

A < B < C < D

D

A < D < C < B

4
JEE Main 2026 (Online) 21st January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements :

Statement I : The correct order in terms of bond dissociation enthalpy is Cl2 > Br2 > F2 > I2.

Statement II : The correct trend in the covalent character of the metal halides is [SnCl4 > SnCl2], [PbCl4 > PbCl2] and [UF4 > UF6].

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

A

Both Statement I and Statement II are true

B

Both Statement I and Statement II are false

C

Statement I is false but Statement II is true

D

Statement I is true but Statement II is false

JEE Main Subjects

Browse all chapters by subject