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JEE Main 20241 FebruaryEvening Shift
Exam
JEE Main
Year
2024
Date
1 February
Shift
Evening Shift
Subject
Chemistry
Chapter
p Block Elements (Group 13 & 14)

JEE Main 2024 · 1 February · Evening Shift · Chemistry · p Block Elements (Group 13 & 14)

Given below are two statements: Statement (I) : SiO _ 2 and GeO _ 2...

Given below are two statements:

Statement (I) : SiO2{SiO}_{2} and GeO2{GeO}_{2} are acidic while SnOSnO and PbOPbO are amphoteric in nature.
Statement (II) : Allotropic forms of carbon are due to property of catenation and pπ−dπp \pi - d \pi bond formation.

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

Options

  1. ABoth Statement I and Statement II are false
  2. BBoth Statement I and Statement II are true
  3. CStatement I is true but Statement II is false
  4. DStatement I is true but Statement II is true

Correct answer

C. Statement I is true but Statement II is false

Step-by-step solution

Statement I,

SnO,PbO,SnO2,PbO2:AmphotericCO2,SiO2,GeO2,GeO:AcidicCO:NeutralSnO, PbO, {SnO}_{2}, {PbO}_{2}: \text{Amphoteric}{CO}_{2}, {SiO}_{2}, {GeO}_{2}, GeO: \text{Acidic}CO: \text{Neutral}

According to Statement II,
Carbon does not have d-orbitals so can not form pπ−dπp \pi - d \pi Bond with itself. Due to properties of catenation and pπ−pπp \pi - p \pi bond formation, carbon is able to show allotropic forms. Allotropic forms of carbon can be crystalline and amorphous.
Diamond and graphite are two well-known crystalline forms of carbon. 

Hence option C is the answer.

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