S Block Elements Question 215
Question: Which of the following alkali metals is smallest in size
[CPMT 1990]
Options:
A) $ Rb $
B) $ K $
C) $ Na $
D) $ Li $
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Answer:
Correct Answer: D
Solution:
Element - | Li | Na | K | Rb |
---|---|---|---|---|
Atomic radius (pm) - | 152 | 186 | 227 | 248 |