The atomic numbers of elements A,B,C and D are z–1, z, z+1 and z+2, respectively. If 'B' is a noble gas, choose the correct answers from the following statements: (a) 'A' has higher electron affinity.(b) 'C' exists in +1 oxidation state.(c) 'D' is an alkali metal.

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(a) and (b)

(b) and (c)

(a) and (c)

(a), (b) and (c)

answer is A.

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Detailed Solution

A is halogen ,B is noble gas,C is alkali metal,D is alkaline earth metal

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