How do the size of ions compare to the size of the atoms from which they from

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Alexis Hancock

Chemistry

29 October, 21:45

How do the size of ions compare to the size of the atoms from which they from

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Breanna Pratt · Answer 1

The nucleus can't hold the 18 electrons in the Cl - ion as tightly as the 17 electrons in the neutral atom, the negative ion is significantly larger than the atom from which it forms. For the same reason, positive ions should be smaller than the atoms from which they are formed.