Covalent Bonding Flashcard

Front

What is a covalent bond?

Back

A covalent bond is a type of chemical bond where two atoms share one or more pairs of electrons.

Front

Which element has the weakest attraction for electrons in a chemical bond?

Back

Sulfur (S) has the weakest attraction for electrons among the given options.

Front

What is the molecular formula for water?

Back

H₂O is the molecular formula for water, which is formed by covalent bonds.

Front

What type of bond is formed in an oxygen molecule (O₂)?

Back

O₂ has a double covalent bond.

Front

How many electrons does hydrogen need to be stable?

Back

Hydrogen needs 2 electrons in its valence shell to be stable.

Front

Which of the following is NOT formed by a covalent bond? K₂S, H₂O, I₂, CO₂

Back

K₂S is NOT formed by a covalent bond; it is an ionic compound.

Front

What are multiple bonds in a molecule?

Back

Multiple bonds occur when two atoms share more than one pair of electrons, such as double or triple bonds.

Front

What elements are necessary for multiple bonds to be present in a molecule?

Back

Carbon (C), Nitrogen (N), and Oxygen (O) are necessary for multiple bonds.

Front

What is the difference between a single and a double covalent bond?

Back

A single covalent bond involves one pair of shared electrons, while a double covalent bond involves two pairs of shared electrons.

Front

What is electronegativity?

Back

Electronegativity is the tendency of an atom to attract electrons in a chemical bond.