. Bond length can be calculated by merely adding covalent bond radii which are


H  = 0.28  A0, N  = 0.70 A0 , O  = 0.66 A0 , Cl  = 0.99 A0 , (C = ) = 0.67 A0,  (C ≡ ) = 0.61 A0, (N ≡ ) = 0.55 A0 and (C - ) = 0.77 A0

Calculate bond lengths in NH3 :

A: N - H  0.98 A0

B: N - H  0.90 A0

C: N - H  0.58 A0

D: None of these  

Best Answer

Explanation:-

Bond length in  N-H will be = Covalent bond radii of N + covalent bond radii of H 

                                           = 0.70 + 2.28 = 0.98 A

Final Answer:-

The correct answer is (A)  N-H  0.98 A0

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