Covalent and Ionic Bonding

Front

How many valence electrons does nitrogen have?

Back

5

Answer explanation

Nitrogen has 5 valence electrons, which are found in its outer shell. This is determined by its position in group 15 of the periodic table, where elements typically have 5 valence electrons.

Front

What can be generalized about covalent bonds?

Back

Electrons will be shared.

Answer explanation

Covalent bonds involve the sharing of electrons between atoms, allowing them to achieve stability. This distinguishes them from ionic bonds, where electrons are transferred. Therefore, the correct choice is that electrons will be shared.

Front

What is it called if there are three-pairs of electrons being shared?

Back

Triple bond

Answer explanation

When three pairs of electrons are shared between atoms, it forms a triple bond. This type of bond is stronger than a single or double bond, making 'Triple bond' the correct answer. Other options do not relate to electron sharing.

Front

Correct Lewis dot structure for fluorine (F₂)? Options: A, B, C, D

Back

B

Answer explanation

The correct Lewis dot structure for fluorine (F2) is choice B, which shows two fluorine atoms sharing a pair of electrons. Each fluorine atom has three lone pairs and one bond, representing the diatomic nature of F2.

Front

How many electrons should Carbon have around its Lewis dot structure?

Back

4

Answer explanation

Carbon has 4 valence electrons, which are represented in its Lewis dot structure. This allows it to form four covalent bonds with other atoms, making 4 the correct answer.

Front

What two types of atoms make a covalent bond?

Back

2 Nonmetals

Answer explanation

Covalent bonds form when two nonmetals share electrons. This sharing allows both atoms to achieve a full outer shell, which is a stable configuration. Therefore, the correct answer is 2 Nonmetals.

Front

How many electrons are shared in a double bond?

Back

4

Answer explanation

In a double bond, two pairs of electrons are shared between two atoms. This means a total of 4 electrons are involved in the bond, making the correct answer 4.

Front

What bond is formed between a metal and a nonmetal?

Back

Ionic bond

Answer explanation

An ionic bond is formed when a metal transfers electrons to a nonmetal, resulting in oppositely charged ions that attract each other. This is distinct from covalent, hydrogen, and metallic bonds, which involve different interactions.

Front

When two nonmetals do not share electrons evenly, the resulting covalent bond will be

Back

polar

Answer explanation

When two nonmetals have different electronegativities, they do not share electrons evenly, resulting in a polar covalent bond. This creates a dipole moment, making the bond polar.

Front

The number of bonds an element will form in a covalent compound will be equal to

Back

the number of electrons needed to reach an octet

Answer explanation

The number of bonds an element forms in a covalent compound corresponds to the number of electrons needed to reach an octet, ensuring stability. This is the correct choice, as elements typically aim for eight valence electrons.