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Properties of Alpha, Beta and Gamma Radiations

Which of the ...

Question

Which of the ions has the largest ionic radius?

A

Be²⁺

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B

Sr²⁺

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C

Ca²⁺

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D

Mg²⁺

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Solution

The correct option is B
Sr²⁺

Ionic radius increases down the group ,in the following option strontium is having the largest ionic radius as the elements arranged in periodic table is Berilyium, Magnesium, Calcium and Strontium. These elements belongs to alkali earth metals.

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