Chemistry
Which element amongst the following has the largest atomic radius?
- Al
- S
- Mg
- Na
Periodic Table
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Answer
Na
Reason — Aluminium (Al), Sulphur (S), Magnesium (Mg) and Sodium (Na) belong to third period. Atomic size decreases on moving across the period as new electrons are added to the same shell. Sodium is the first member of period 3, hence sodium has the largest atomic radius of the given elements.
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