Easy MCQ +4 / -1 PYQ · JEE Mains 2022

Choose the correct order of density of the alkali metals :

  1. A Li < K < Na < Rb < Cs Correct answer
  2. B Li < Na < K < Rb < Cs
  3. C Cs < Rb < K < Na < Li
  4. D Li < Na < K < Cs < Rb

Solution

The increasing order of density of alkali metals as <br/><br/> $$ \underset{0.53}{\mathrm{Li}}<\underset{0.86}{\mathrm{~K}}<\underset{0.97}{\mathrm{Na}}<\underset{1.53}{\mathrm{Rb}}<\underset{1.87}{\mathrm{Cs}} \quad\text { (in } \mathrm{g}{/ \mathrm{dm}^{3} \text { ) }} $$ <br/><br/> ' $\mathrm{K}$ ' metal has less density as compare to ' $\mathrm{Na}$ ' metal.

About this question

Subject: Chemistry · Chapter: s-Block Elements · Topic: Alkali Metals

This question is part of PrepWiser's free JEE Main question bank. 96 more solved questions on s-Block Elements are available — start with the harder ones if your accuracy is >70%.

Drill 25 more like these. Every day. Free.

PrepWiser turns these solved questions into a daily practice loop. Chapter-wise drills, full mocks, AI doubt chat. No auto-renew.

Start free →