JEE Main20241 Feb 2024Evening ShiftChemistryp Block Elements (Group 13 & 14)Actual
Given below are two statements: Statement (I) : SiO 2 and GeO 2 are acidic while SnO and PbO are amphoteric in nature. Statement (II) : Allotropic forms of carbon are due to property of catenation and pπ - dπ bond formation. In the light of the above statements, choose the most appropriate answer from the options given below:
Options
- ABoth Statement I and Statement II are false
- BBoth Statement I and Statement II are true
- CStatement I is true but Statement II is false
- 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 , SnO 2 , PbO 2 : Amphoteric CO 2 , SiO 2 , GeO 2 , GeO : Acidic CO : Neutral According to Statement II, Carbon does not have d-orbitals so can not form pπ - dπ Bond with itself. Due to properties of catenation and pπ - pπ 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.