NTA Abhyas JEE Main2020ChemistryClassification of Elements and Periodicity in PropertiesPractice
The correct code for stability, of oxidation states for given cations is I. P b 2 + > P b 4 + , T l + < T l 3 + II. B i 3 + < S b 3 + , S n 2 + < S n 4 + III. P b 2 + > P b 4 + , B i 3 + > B i 5 + IV. T l 3 + < I n 3 + , S n 2 + > S n 4 + V. S n 2 + < P b 2 + , S n 4 + > P b 4 + VI. S n 2 + < P b 2 + , S n 4 + < P b 4 +
Options
- AV and VI
- BI, III and VI
- CIII and V
- DII and IV
Correct answer
C. III and V
Step-by-step solution
Due to inert effect the stability of lower oxidation state gradually increases while stability of higher oxidation state gradually decreases down the group in elements of group 13th to 15th. So correct order are III. P b 2 + > P b 4 + , B i 3 + > B i 5 + IV. S n 2 + < P b 2 + , S n 4 + < P b 4 +