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This section contains multiple questions. Each question contains STATEMENTS 1 (Assertion) and STATEMENT 2 (Reason). Each question has 4 choices (A), (B), (C), and (D), out of which ONLY ONE is correct.
(A) Statement 1 is True and statement 2 is True; statement 2 is correct explanation for statement 1.
(B) Statement 1 is True and statement 2 is True; statement 2 is not a correct explanation for statement 1.
(C) Statement 1 is True and statement 2 is False.
(D) Statement 1 is False and statement 2 is True.
Statement 1: Among the 16th group elements, oxygen has the lowest value of first electron affinity.
And
Statement 2: Oxygen has extremely small size.
(A) Electron affinity values of 16th group elements are: (in kJ mol–1)
S: –200; Se: - 195; Te – 190.1; Br: - 180; O: - 141
Because of very small size of oxygen atom (and the high electron density), the first incoming electron is repelled by the electrons of atom present in very small second orbit.
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