Question

1. choose the best answer.

the attraction of an atoms nucleus to the electrons in its electron cloud is called
ionic bond
electrostatic attraction
potential energy
intramolecular force

1. choose the best answer.

in a nonpolar covalent bond,
the force of attraction for the shared pair of electrons is exerted by the atoms with the lower electronegativity
the force of attraction for the shared pair of electrons is exerted by the atom with a greater electronegativity
the force of attraction for the shared pair of electrons is determined by the repulsion of the unshared electrons
the force of attraction for the shared pair of electrons is equally exerted by atoms in the molecule

Explanation:

• Question 4:
• An ionic bond is a chemical bond formed through the transfer of electrons between atoms, so it is not the attraction within an atom.
• Electrostatic attraction is the force between charged particles. In an atom, the positively - charged nucleus and negatively - charged electrons are attracted by electrostatic forces.
• Potential energy is the energy that an object has due to its position or state, not a force of attraction within an atom.
• Intramolecular forces are forces within a molecule (such as covalent, ionic, or metallic bonds), but the specific attraction of the nucleus to electrons is electrostatic.
• Question 5:
• In a non - polar covalent bond, atoms have similar electronegativities.
• If one atom had a lower electronegativity, it would not have an equal share in a non - polar bond.
• If one atom had a greater electronegativity, the bond would be polar.
• The repulsion of unshared electrons does not determine the equal sharing in a non - polar covalent bond.
• In a non - polar covalent bond, the force of attraction for the shared pair of electrons is equally exerted by atoms in the molecule because of similar electronegativities.

Answer:

1. electrostatic attraction
2. the force of attraction for the shared pair of electrons is equally exerted by atoms in the molecule