1.For each pair of covalently bonded atoms, choose the one expected to have the

ID: 1062529 • Letter: 1

Question

1.For each pair of covalently bonded atoms, choose the one expected to have the higher bond energy.
(A) CC
(B) C=C...... (A,B)

(C) C=N
(D) C-N...... (C,D)

For each pair of covalently bonded atoms, choose the one expected to have the higher bond energy.
(A) N-N
(B) NN...... (A,B)

(C) CO
(D) C=O...... (C,D)

For each pair of covalently bonded atoms, choose the one expected to have the shortest bond length.

(A) CC
(B) C=C...... (A,B)

(C) C=N
(D) C-N...... (C,D)

For each pair of covalently bonded atoms, choose the one expected to have the shortest bond length.

(A) H-I
(B) H-Cl...... (A,B)

(C) O-O
(D) N-N...... (C,D)

The strength of a covalent bond depends upon the size of the atoms and the bond order. In general short bonds are strong bonds.

Explanation / Answer

The energy depend on bond order, bond and bond length. The higher the bond order the greater the energy while shorter the bond lenght the greater the energy.

1. A > B and C >D

2. B > A and C > D

3. A > B and C > D

4. B < A and C < D