Regents Chemistry Bonding Review

Front

What is a tetrahedral molecule?

Back

A tetrahedral molecule is a molecular shape where a central atom is bonded to four other atoms, arranged at the corners of a tetrahedron. An example is CH₄ (methane).

Front

What type of bond is present in ionic compounds?

Back

Ionic bonds are formed when electrons are transferred from one atom to another, resulting in the formation of charged ions that attract each other. Example: NaCl.

Front

What is a covalent bond?

Back

A covalent bond is formed when two atoms share one or more pairs of electrons. Example: H₂O (water) has covalent bonds between hydrogen and oxygen.

Front

Which element has the most stable electron configuration in the ground state?

Back

Neon (Ne) has a complete outer shell of electrons, making it very stable.

Front

What is the relationship between bond type and melting point?

Back

Ionic compounds generally have higher melting points than covalent compounds due to the strong electrostatic forces between ions.

Front

What is a diatomic molecule?

Back

A diatomic molecule consists of two atoms, which can be of the same or different elements. Examples include H₂, O₂, and N₂.

Front

How many electrons are shared in a triple bond?

Back

In a triple bond, three pairs of electrons are shared between two atoms. Example: N₂ (nitrogen gas) has a triple bond.

Front

What is the significance of the octet rule in bonding?

Back

The octet rule states that atoms tend to bond in such a way that they have eight electrons in their valence shell, achieving a stable electron configuration.

Front

What is the difference between polar and nonpolar covalent bonds?

Back

Polar covalent bonds occur when electrons are shared unequally between atoms, while nonpolar covalent bonds occur when electrons are shared equally.

Front

What is the formula for calculating the number of valence electrons in an atom?

Back

The number of valence electrons can be determined from the group number of the element in the periodic table.