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Which of the following particles is the smallest in radius

2 Answers

5 votes
Helium is the smallest radius
User Greg Burkett
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12 votes

Answer:

Its helium

Explanation: Because teh effective nuclear charge holds the valence ectrons clos to the nuclues. the Atomic radius would decrease as you move from the led=ft and right of the perodic table

User Eric Johnson
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