Consider the following statements : I. The radius of an anion is larger than that of the parent ...

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Consider the following statements :
I. The radius of an anion is larger than that of the parent atom.
II. Ionization enthalpy generally increases as we go across a period.

III. A qualitative measure of the ability of an atom in a chemical compound to attract shared electrons to itself is called electronegativity.
Which of the above statements is/are correct?
(1) I alone
(2) II alone
(3) I, II and III
(4) II and III
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