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NEETChemistryClassification of Elements and Periodicity in Properties

The atomic number of elements A, B, C and D are Z − 1, Z, Z + 1, Z + 2 respectively. If B is a noble gas, choose the correct option (i) (A) has higher electron affinity (ii) C exists in + 2 oxidation state (iii) D is an alkaline earth metal

Options

  1. Ai a n d i i
  2. Bi i a n d i i i
  3. Ci a n d i i i
  4. Di , i i a n d i i

Correct answer

C. i a n d i i i

Step-by-step solution

Atomic number of B = Z and is a noble gas Atomic number of A = Z - 1 (i.e., is a Halogen) Atomic number C , = Z + 1 (i.e., is a alkali metal) At number of D = Z + 2 (i.e., alkaline earth metal) Hence, element A must be a Halogen, so has highest electron affinity among the given species. C . is an alkali metal and D is an alkaline earth metal

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