Ionic and Covalent bonds

Ionic or covalent bond between these 2 atoms?

C O

• Ionic

• Covalent

Ionic or covalent bond between these 2 atoms?

Na Br

• Ionic

• Covalent

What is the rule for figuring out if it is ionic or covalent?

• Covalent bonds form between two metals.
• Ionic bonds form between two metals.
• Covalent bonds form between a metal and a non-metal.
• Ionic bonds form between a metal and a non-metal.

Why do all bonds form?

• so the number of protons equals the number of electrons

• so an atom can become unstable

• to fill the outermost energy level

Valence electrons are found

• in the innermost energy level of an atom

• in the middle energy levels of an atom

• in the outermost energy levels of an atom

An atom with 3 valence electrons "wants" a full shell, so it can either gain 5 or lose 3. Which is more likely to occur?

• Gain 5

• Lose 3

• Nothing

What is the formula for nickel (II) fluoride

• NiF₂

• Ni₂F

• NiF

• Ni₂F₄

How many Aluminum atoms are in Al₂O₃?

• 3

• 5

• 2

• 1

Write the correct formula for Sodium Chloride.

• SC

• SCl

• NaCl

• NaCl₂

How do covalent bonds form?

• By donating and receiving valence electrons between atoms.

• Scientists still aren't sure.

• Opposite slight charges attract each atom in the compound.

• Sharing valence electrons between atoms