11 grade chemistry others
The atom having smallest size in the list below is:
- (a)- Na
- (b)- Cl
- (c)- Si
- (d)- Ar
The atom having smallest size in the list below is:
- (a)- Na
- (b)- Cl
- (c)- Si
- (d)- Ar
1 Answer
Askiitians Tutor Team
Approved Tutor Answer11 Months agoThe atom with the smallest size among the options provided is chlorine (Cl). Atomic size generally decreases across a period from left to right on the periodic table due to increased nuclear charge, which pulls the electrons closer to the nucleus.
Comparison of Atomic Sizes
- Na (Sodium): Larger atomic radius due to being in Group 1.
- Cl (Chlorine): Smallest atomic radius in this list, located in Group 17.
- Si (Silicon): Intermediate size, found in Group 14.
- Ar (Argon): Noble gas with a larger radius than chlorine.
In summary, chlorine is the smallest atom in this selection, making it the correct answer.
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