APC U06 Review: Covalent Bonding

Front

What type of intermolecular force is present in I2, Br2, and Cl2?

Back

London dispersion forces are the only type of intermolecular force present in nonpolar molecules like I2, Br2, and Cl2.

Front

What does a triple bond consist of?

Back

A triple bond consists of one sigma bond and two pi bonds.

Front

What is the hydrogen-hydrogen bond angle in CH2O?

Back

The hydrogen-hydrogen bond angle in CH2O is less than 120°.

Front

What is the molecular geometry of a trigonal pyramidal molecule?

Back

A trigonal pyramidal molecule has a central atom bonded to three other atoms and one lone pair, resulting in a pyramid shape.

Front

How do you calculate the formal charge of an atom?

Back

Formal charge = (Valence electrons) - (Non-bonding electrons) - 0.5*(Bonding electrons).

Front

What is the difference between sigma and pi bonds?

Back

Sigma bonds are formed by the head-on overlap of atomic orbitals, while pi bonds are formed by the side-to-side overlap of p orbitals.

Front

What is the bond angle in a tetrahedral molecule?

Back

The bond angle in a tetrahedral molecule is approximately 109.5°.

Front

What type of bond is formed between two nonmetals?

Back

A covalent bond is formed between two nonmetals.

Front

What is the significance of electronegativity in covalent bonding?

Back

Electronegativity determines how electrons are shared between atoms; a larger difference leads to polar covalent bonds.

Front

What is a polar covalent bond?

Back

A polar covalent bond is a type of bond where electrons are shared unequally between two atoms, resulting in partial charges.