Metals that form cations with different charges

Question 1

Chromium:

1. ion
2. name
3. older name

Answer 1

1. Cr ^2+
    Cr ^3+
2. chromium (II)
    chromium (III)
3. chromous
    chromic

Question 2

Iron:

1. ion
2. name
3. older name

Answer 2

1. Fe ^2+
    Fe^ 3+
2. Iron (II)
    Iron (III)
3. Ferrous
    Ferric

Question 3

Cobalt:

1. ion
2. name
3. older name

Answer 3

1. Co ^2+
    Co ^3+
2. Cobalt(II)
    Cobalt(III)
3. Cobaltous
     Cobaltic

Question 4

Copper:

1. ion
2. name
3. older name

Answer 4

1. Cu ^+
    Cu ^2+
2. Copper (I)
     Copper (II) 
3. Cuprous
    Cupric

Question 5

Tin:

1. ion
2. name
3. older name

Answer 5

1. Sn ^2+
    Sn ^4+
2. Tin (II)
    Tin (IV)
3. Stannous
    Stannic

Question 6

Mercury:

1. ion
2. name
3. older name

Answer 6

1. Hg2 ^2+
     Hg ^2+
2. Mercury (I)
     Mercury (II)
3. Mercurous
     Mercuric

Question 7

Lead:

1. ion
2. name
3. older name

Answer 7

1. Pb ^2+
    Pb ^4+
2. Lead(II)
    Lead (IV)
3.  Plumbous
     Plumbic