Question

Bond energy of H2
, X2
and HX are 434 kJ/mol, 242 kJ/mol and 432 kJ/mol.
Electronegativity of ‘X’ in Pauling scale is
(1) 2.5 (2) 3.0 (3) 3.5 (4) 4.0

Answer 1

Answer :

(2) 3.0

Explanation :

bind ethalpy of chlorine is 242kj/mol and chlorine has Electronegativity 3.0 on pauling scale hence answer is (2)

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