College Chemistry: Unit 4 Practice Test

Front

What is hybridization in chemistry?

Back

Hybridization is the concept of mixing atomic orbitals to form new hybrid orbitals, which can be used to describe the bonding in molecules.

Front

What is the hybridization of the central atom in ClF2+?

Back

The hybridization of the central atom in ClF2+ is sp3.

Front

Which element is the most electronegative?

Back

Fluorine (F) is the most electronegative element.

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

What type of bond is formed between two identical atoms?

Back

A nonpolar covalent bond (pure covalent bond) is formed between two identical atoms.

Front

Which pair of atoms forms a nonpolar covalent bond?

Back

O - O forms a nonpolar covalent bond.

Front

What is the difference between paramagnetic and diamagnetic substances?

Back

Paramagnetic substances have unpaired electrons and are attracted to magnetic fields, while diamagnetic substances have all paired electrons and are weakly repelled by magnetic fields.

Front

Is O2 paramagnetic or diamagnetic?

Back

O2 is paramagnetic.

Front

What is an incomplete octet?

Back

An incomplete octet refers to a situation where an atom does not have eight electrons in its valence shell.

Front

What is an expanded octet?

Back

An expanded octet occurs when an atom has more than eight electrons in its valence shell, typically seen in elements from the third period and beyond.