Common ions to know

Question 1

What is the formula for the hydrogen ion?

Answer 1

H⁺

Question 2

What is the formula for the sodium ion?

Answer 2

Na⁺

Question 3

What is the formula for the potassium ion?

Answer 3

K⁺

Question 4

What is the formula for the lithium ion?

Answer 4

Li⁺

Question 5

What is the formula for the calcium ion?

Answer 5

Ca²⁺

Question 6

What is the formula for the magnesium ion?

Answer 6

Mg²⁺

Question 7

What is the formula for the aluminium ion?

Answer 7

Al³⁺

Question 8

What is the formula for the zinc ion?

Answer 8

Zn²⁺

Question 9

What is the formula for the iron(II) ion?

Answer 9

Fe²⁺

Question 10

What is the formula for the iron(III) ion?

Answer 10

Fe³⁺

Question 11

What is the formula for the copper(II) ion?

Answer 11

Cu²⁺

Question 12

What is the formula for the ammonium ion?

Answer 12

NH₄⁺

Question 13

What is the formula for the chloride ion?

Answer 13

Cl⁻

Question 14

What is the formula for the bromide ion?

Answer 14

Br⁻

Question 15

What is the formula for the iodide ion?

Answer 15

I⁻

Question 16

What is the formula for the oxide ion?

Answer 16

O²⁻

Question 17

What is the formula for the sulfide ion?

Answer 17

S²⁻

Question 18

What is the formula for the hydroxide ion?

Answer 18

OH⁻

Question 19

What is the formula for the nitrate ion?

Answer 19

NO₃⁻

Question 20

What is the formula for the sulfate ion?

Answer 20

SO₄²⁻

Question 21

What is the formula for the carbonate ion?

Answer 21

CO₃²⁻

Question 22

What is the formula for the hydrogen carbonate ion?

Answer 22

HCO₃⁻