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Bond length is the distance between the nuclei of two bonded atoms. It is usually expressed in:
Joules
Kilograms
Angstroms
Degrees
As the bond order between two atoms increases, the bond length generally:
Increases
Decreases
Remains the same
Becomes zero
Which of the following factors does NOT influence the bond length between two atoms?
Electronegativity difference alone
Size of the atoms involved
Bond order
Hybridization of the atoms
As the bond order between two atoms increases, the bond length:
Increases
Decreases
Remains the same
Becomes zero
The bond length in a molecule exhibiting resonance is:
Equal to a single bond length
Equal to a double bond length
Intermediate between single and double bond lengths
Longer than a double bond length
Which of these factors does NOT influence the dipole moment of a molecule?
Electronegativity difference
Bond length
Molecular geometry
Molar mass
Which diatomic species has the shortest bond length according to MO theory?
N2
O2
F2
B2
The dipole moment of HBr is 0.78 D and the bond length is 1.41 Å. What is the percentage ionic character of the H-Br bond? (1 D = 3.336 x 10-30 C m, 1 Å = 10-10 m)
11.5%
22.1%
5.7%
1.15%
Which of the following factors does NOT affect the dipole moment of a molecule?
Electronegativity difference between atoms
Bond length
Molecular geometry
Molecular Weight
Which of the following is NOT a consequence of hyperconjugation?
Stability of carbocations
Shortening of C-C single bond adjacent to a double bond
Stability of alkenes
Bond bending
