Formulae

Question 1

What types of ions form and become positive ions? (4 answers)

Answer 1

Group 1 ions
Group 2 ions
Grup 3 ions
Other common ions: silver, zinc, ammonium, hydrogen

Question 2

Some group one ions are lithium, sodium and potassium.
Write the ion formula for each of these:

Answer 2

Lithium = Li +
Sodium = Na+
Potassium = K+

Question 3

Some group two ions are magnesium, calcium and barium
Write the ion formula for each of these:

Answer 3

Magnesium = Mg 2+
Calcium = Ca 2+
Barium = Ba 2+

Question 4

A group three ion is aluminium
Write the ion formula for aluminium:

Answer 4

Aluminium = Al 3+

Question 5

Some common ions are silver, zinc, ammonium, hydrogen
Write the ion formula for each of these:

Answer 5

Silver = Ag+
Zinc = Zn 2+
Ammonium = NH4+
Hydrogen = H+

Question 6

What type of ions form and become negative ions?

Answer 6

Group 6 ions
Group 7 ions
Other common ions: nitrate, sulfate, carbonate, hydrogencarbonate, hydroxide, hydride and phosphate

Question 7

Some group seven ions are fluoride, chloride, romide, iodide
Write the ion formula for each of these:

Answer 7

Fluoride = F-
Chloride = Cl-
Bromide = Br-
Iodide = I-

Question 8

Some group six ions are oxide and sulfide
Write the ion formula for each of these:

Answer 8

Oxide = O 2-
Sulfide = S 2-

Question 9

Some common ions are nitrate, sulfate, carbonate, hydrogencarbonate, hydroxide, hydride and phosphate

Answer 9

Nitrate = NO3 -
Sulfate = SO4 2-
Carbonate = CO3 2-
Hydrogencarbonate = HCO3 -
Hydroxide = OH -
Hydride = H-
Phosphate = PO4 3-