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Get Answers to all your Questions
- #National Eligibility Cum Entrance Test
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- #Chemistry
- #Class 11
- #s- Block Elements ( Alkali and Alkaline earth metals )
- #Medical
Which of the following elements has least density ?
Option: 1
Na
Option: 2
K
Option: 3
Rb
Option: 4
Fr
Answers (1)
As we have learned
Density increases down the group but in case of Na and K the inverse in shell size out weigh the pull of the core on the outer shell electron due to this K is less denser than Na
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