Take this Quiz: A-Level Chemistry: Bonding and Shapes | Zestly

Question 1

Which of the following statements correctly describes the nature of a coordinate (dative covalent) bond?

Accepted Answer

It is a covalent bond where both electrons in the shared pair originate from the same atom.

Question 2

Which of the following molecules exhibit a bond angle of approximately 107 degrees?

Accepted Answer

NH3

Question 3

Why does the boiling point of HF (hydrogen fluoride) significantly exceed that of HCl (hydrogen chloride)?

Accepted Answer

HF molecules form intermolecular hydrogen bonds, which are stronger than the dipole-dipole forces in HCl.

Question 4

Which of the following statements regarding induced dipole-dipole (van der Waals) forces are true?

Answer

They are present in all molecules, regardless of polarity.

Answer

They are the primary force responsible for the high boiling point of water.

Answer

Their strength increases with the number of electrons in the molecule.

Answer

They arise from the permanent separation of charge within a covalent bond.

Question 5

According to electron-pair repulsion theory, what is the predicted bond angle in a molecule of SF6?

Answer

109.5 degrees

Answer

90 degrees

Answer

120 degrees

Answer

180 degrees