NTA Abhyas JEE Main2020ChemistryClassification of Elements and Periodicity in PropertiesPractice
Increasing order of density is
Options
- AL i < K < N a < R b < C s
- BL i < N a < K < R b < C s
- CL i < N a < K < C s < R b
- DK < L i < N a < R b < C s
Correct answer
A. L i < K < N a < R b < C s
Step-by-step solution
As per Lother-Meyer's curve, the atomic volume of C s is maximum among s-block elements. But atomic masses increases more rapidly than atomic volume, hence density increases along the group