The density of alkali metals | s-Block Elements JEE Main

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JEE MAIN 2023

12-04-2023 S1

Question

The density of alkali metals is in the order

Select the correct option:

Na < K < Cs < Rb

K < Na < Rb < Cs

K < Cs < Na < Rb

Na < Rb < K < Cs

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

In general moving down the group, mass increases more prominently as compared to volume (size) hence density increases for Group I metal. Due to empty 3d subshell in K increase in size is more prominent as compare to mass. Li < K < Na < Rb < Cs

Question Tags

JEE Main

Chemistry

Medium

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