Allred-Rochow electronegativity of an element isA. directly proportional to the effective nuclear chargeB. directly proportional to the covalent radiusC. inversely proportional to the square of the covalent radiusThe correct answer is
(a)A and B
(b)A and C
(c)B and C
(d)A and D
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
Allred–Rochow: χ = 0.359 Z_eff/r² + 0.744. Electronegativity rises with Z_eff and falls with the square of the covalent radius. A and C (b).