Among the following cations, the one present in a least ionic halide salt is:

calcium ion

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barium ion

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caesium ion

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potassium ion

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Solution

The correct option is A calcium ion
Smaller the size of cation and greater the charge on cation, the greater is the covalent character.

Both calcium and potassium have small size but the charge on calcium ion is more.

Hence, calcium ion is most covalent or least ionic.

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Among the following cations, the one present in a least ionic halide salt is:

The correct option is A calcium ionSmaller the size of cation and greater the charge on cation, the greater is the covalent character. Both calcium and potassium have small size but the charge on calcium ion is more. Hence, calcium ion is most covalent or least ionic.

The correct option is A calcium ion
Smaller the size of cation and greater the charge on cation, the greater is the covalent character.

Both calcium and potassium have small size but the charge on calcium ion is more.

Hence, calcium ion is most covalent or least ionic.