Understanding Covalent Bonding and Dot-Cross Diagrams

What type of elements participate in covalent bonding?

• Only metals

• Only nonmetals

• Metalloids only

• Metals and nonmetals

What is primarily involved in covalent bonding?

• Exchange of neutrons

• Sharing of electrons

• Sharing of protons

• Transfer of electrons

How many electrons does hydrogen need to complete its outer shell?

• One

• Two

• Three

• Four

How many electrons does chlorine have in its outer shell?

• Eight

• Six

• Seven

• Five

In the hydrogen-chlorine bond, how many electrons are shared?

• Four

• One

• Two

• Three

What is the purpose of using dots and crosses in dot and cross diagrams?

• To differentiate electron spins

• To indicate the charge of electrons

• To show which atom the electrons originally belonged to

• To represent different isotopes

How many electrons are shared between the two oxygen atoms in the molecule?

• Eight

• Six

• Four

• Two

What is the total number of electrons around each oxygen atom after bonding?

• Seven

• Nine

• Eight

• Six