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Question

Which of the following has the largest size?


A

Al

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B

Al+

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C

Al+2

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D

Al+3

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Solution

The correct option is A

Al


This can be answered based on the effective nuclear charge.

As Aluminium loses more electrons, the 'pull' of the nucleus over the remaining electrons increases. This would naturally lead to a reduction in size.

So, the Al atom would have the largest size.


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