types of chemical bonds

What elements generally make an ionic bond?

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

What elements generally make a covalent bond?

• metal and nonmetal
• 2 or more 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.

An ionic bond forms when 

• Valence electrons are shared
• a sea of mobile electrons surround the cations
• valence electrons are transferred between atoms
• none of the above

Predict the bond that will form between Be and F.

• Ionic
• Covalent

Predict the bond that will form between Se and Cl.

• Ionic
• Covalent

Predict the bond that will form between Sr and S.

• Ionic
• Covalent

What is a valence electron?

• an electron that is found in the outermost shell of an atom. 
• an electron found in the innermost shell of an atom.
• an electron found in the middle shell.

What is the number of valence electrons for Oxygen?

• 8
• 6
• 2
• 1

What is the number of valence electrons for Beryillum?

• 1
• 4
• 2
• 7