6. When ionized, what does the charge of the following become?
a. Barium (Ba):
b. Rubidium (Rb):
c. Aluminum (Al):
d. Phosphorus (P):
e. Sulfur (S):
f. Bromine (Br):
7. Predict the chemical formula of the following addition of pairs of elements:
a. Barium + Sulfur
b. Sodium + Bromine
c. Strontium + Phosphorus
d. Potassium + Sulfur
e. Calcium + Nitrogen