Electrons and chemical bonding

What elements generally make an ionic bond?

• metal and nonmetal
• 2 nonmetals
• metal
• none of the above

What elements generally make a covalent bond?

• metal and nonmetal
• 2 nonmetals
• metal
• none of the above

In chemical compounds, covalent bonds form when

• the electronegativity difference between two atoms is very large.
• electrons are completely transferred between two metals.
• pairs of electrons are shared between two nonmetal atoms.
• two nonmetal atoms are attracted to each other by opposite charges.

Predict the bond that will form between Be and F.

• Ionic
• Covalent

Predict the bond that will form between Se and Cl

• Ionic
• Covalent

Using electronegativities, what type of bond is formed by S and Br.

• ionic
• polar covalent
• non-polar covalent

Using electronegativities, what type of bond is formed by Co and F.

• ionic
• polar covalent
• non-polar covalent

What atom matches this electron configuration?
1s²2s²2p⁶3s²

• Neon
• Magnesium
• Aluminum
• Potassium

How many electrons does Si contain? (click to see image)

• 14
• 28
• 2
• 4

How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0