Question

Which of the following has the largest size?

1) Al3+ 2) K+ 3) Mg2+ 4) Na+​

Answer 1

Answer:

Na+

Explanation:

i think so

Answer 2

Answer:

☆how can we decide size of ions:-

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• size of ions are directly proportional to the negative charge and inversely proportional to the positive charge.

• in periodic table when we move from up to down in a group so, size of element is increasing.

☆reason

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• Anion have negative charge so, it have more electrons than neutral atom so, it's radius is too large than neutral atom
• Cation have positive change in it..so, it have less electrons than neutral atom so, it's radius is too small than neutral atom.

✷ANSWER

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• K+ is the right answer... because it comes lower than Na+ in periodic table so, its size is larger than Na+.

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