Bond Characteristics of Covalent Molecules

The factors on which bond energy of covalent molecules depends upon:

• Number of protons, distance between the atoms, and electronegativity of the atoms
• Number of shared electrons, distance between the atoms, and electronegativity of the atoms
• Number of unshared electrons, distance between the atoms, and electronegativity of the atoms
• Number of shared electrons, distance between the molecules, and electronegativity of the atoms

The bond order is defined as:

• The bond order is the sum of the number of bonding electrons and the number of anti-bonding electrons.
• The bond order is the product of the number of bonding electrons and the number of anti-bonding electrons.
• The bond order is the difference between the number of bonding electrons and the number of anti-bonding electrons, divided by 2.
• The bond order is the average of the number of bonding electrons and the number of anti-bonding electrons.

Which hydrocarbon has maximum bond energy:

• ethane
• etthene

• ethyne

• methane

Answer explanation

The bond energy is in order CΞC > C=C > C-C

What is the difference between bond energy & bond dissociation energy:

• Bond energy and bond dissociation energy are two different terms for the same concept.
• Bond energy is the energy required to form a bond, while bond dissociation energy is the energy released when a bond is formed.
• Bond energy is the energy required to break a bond in a solid, while bond dissociation energy is the energy required to break a bond in a liquid.
• Bond energy is the average energy required to break a bond in a mole of gaseous molecules, while bond dissociation energy is the energy required to break a specific bond in a molecule.

What is dipole moment?

• Dipole moment is a measure of the separation of positive and negative charges in a molecule.
• Dipole moment is a measure of the total charge in a molecule.
• Dipole moment is a measure of the molecular weight of a molecule.
• Dipole moment is a measure of the bond strength between atoms in a molecule.

The molecule which has zero dipole moment?

• Ammonia (NH₃)

• Carbon dioxide (CO₂)

• Methane (CH₄)

• Water (H₂O)

Poles appeared on covalent molecule is due to:

• Unequal sharing of bonding electrons

• Ionic bonding
• equal sharing of bonding electrons

• Complete sharing of electrons

The unit of dipole moment is:

• Coulomb (C)
• Volt (V)
• Debye (D)
• Tesla (T)

1 Debye is equal to:

• 1.234 × 10^-29

• 5.678 × 10^-30

• 2.5 × 10^-30

• 3.336 × 10^-30

CO₂ is nonpolar while SO₂ is polar because:

• The size of the atoms in the molecule
• The temperature at which the molecule exists
• The difference in electronegativity between the atoms and the molecular geometry
• The number of atoms in the molecule