First slide
Trends in Atomic Properties & Physical Properties

Correct trend regarding density of alkalimetals is


Density down the group increases
Expected trend: Li < Na < K < Rb < Cs; 

Due to larger interatomic distances and availability of vacant d-orbitals in potassium, density of potassium is less than that of sodium;

Actual trend; Li < K < Na < Rb < Cs

Get Instant Solutions
When in doubt download our app. Now available Google Play Store- Doubts App
Download Now
Doubts App