back to directory
NEET CHEMISTRYP Block ElementsMedium

Question

In which of the following pairs, both the species are not isostructural?

A

SiCl4, PCl4+

B

Diamond, silicon carbide

C

NH3, PH3

D

XeF4, XeO4

Step-by-Step Solution

Isostructural species have the same shape and geometry.

  1. XeF4: Xenon undergoes sp3d2 hybridization (4 bond pairs + 2 lone pairs) and has a square planar geometry.
  2. XeO4: Xenon undergoes sp3 hybridization (4 bond pairs + 0 lone pairs) and has a tetrahedral geometry. Since their shapes are different, they are not isostructural. In contrast, SiCl4 and PCl4+ are both tetrahedral (sp3); Diamond and Silicon carbide both have a similar tetrahedral network solid structure; NH3 and PH3 are both trigonal pyramidal (sp3 with 1 lone pair).

Exam Context & Concepts Covered

This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from P Block Elements. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

CHEMISTRYP Block Elementsfollowingspeciesisostructural

More P Block Elements Questions

View all

The number of carbon atoms per unit cell of diamond unit cell is:

A.4
B.8
C.6
D.1
MediumSolve

The correct statement among the following is :

A.Sn2+ is an oxidizing agent while Pb4+ is a reducing agent.
B.Sn2+ and Pb2+ both are oxidizing agents.
C.Sn4+ is a reducing agent while Pb4+ is an oxidizing agent.
D.Sn2+ is a reducing agent while Pb4+ is an oxidizing agent.
MediumSolve

A compound among the following that is least likely to behave as a Lewis base is:

A.NH3
B.BF3
C.OH-
D.H2O
EasySolve

Choose the correct statement:

A.Both diamond and graphite are used as dry lubricants.
B.Diamond and graphite have a two-dimensional network.
C.Diamond is covalent and graphite is ionic.
D.Diamond is $sp^3$ hybridised and graphite is $sp^2$ hybridized.
EasySolve

A compound among the following having a similar structure to graphite is:

A.B
B.B4C
C.B2H6
D.BN
MediumSolve

Select the element (M) whose trihalides cannot be hydrolysed to form $[M(H_2O)_6]^{3+}$.

A.Ga
B.In
C.Al
D.B
MediumSolve

The incorrect statement among the following is:

A.SnF4 is ionic in nature.
B.PbF4 is covalent in nature.
C.SiCl4 is easily hydrolysed.
D.GeX4 (X = F, Cl, Br, I) is more stable than GeX2
MediumSolve

Identify the incorrect statement:

A.Carbon has the tendency to form chains and rings with itself.
B.Silicon and Germanium are useful in semiconductor industry.
C.Boron trifluoride is a strong Lewis acid.
D.Common oxidation states of group 14 elements are +1 and +3.
EasySolve

Why 32,000+ students choose TopperSquare

Everything you need to crack NEET

15,000+ Chapter MCQs

Physics, Chemistry, Biology — chapter-wise, topic-wise practice

AI Performance Analytics

Know your weak topics. Get a personalised study plan.

Full NEET Mock Tests

180 questions, timed, with detailed score analysis

PYQ Sets 2010–2024

15 years of past papers with solved explanations

Start Practising Free

No credit card · 30-second signup · Free forever plan included

This neet chemistry practice question is part of the TopperSquare free question bank. TopperSquare offers 15,000+ chapter-wise NEET MCQs across Physics, Chemistry, and Biology with detailed step-by-step explanations, full mock tests, NEET PYQs (2010–2024), and an AI-powered performance analytics dashboard. browse all neet practice questions → · practice chemistry sets →

Explore more subjects:Physics MCQs•Chemistry MCQs•Biology MCQs•Botany MCQs•Zoology MCQs•NEET Mock Tests•NEET PYQs