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JEE Main20246 Apr 2024Evening ShiftChemistryp Block Elements (Group 13 & 14)Actual

Evaluate the following statements related to group 14 elements for their correctness. (A) Covalent radius decreases down the group from ( C ) to ( Pb ) in a regular manner. (B) Electronegativity decreases from ( C ) to ( Pb ) down the group gradually. (C) Maximum covalance of ( C ) is 4 whereas other elements can expand their covalance due to presence of d orbitals. (D) Heavier elements do not form ( p - p ) bonds. (

Options

  1. A(A), (B) and (C) Only
  2. B(C), (D) and (E) Only
  3. C(C) and (D) Only
  4. D(A) and (B) Only

Correct answer

B. (C), (D) and (E) Only

Step-by-step solution

(A) Down the group; radius increases (B) EN does not decrease gradually from C to Pb . (C) Correct. (D) Correct. (E) Range of oxidation state of carbon ; -4 to +4

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