Ion Names and Charges (Oxidation Numbers)

Question 1

Transition metals, as well as tin and lead), can form _

Answer 1

multiple ions

Question 2

The exceptions to the transition are _

Answer 2

Silver, Zinc, and Cadmium

Question 3

What ion does Silver form?

Answer 3

Ag+1

Question 4

What ion does Zinc form?

Answer 4

Zn+2

Question 5

What ion does Cadmium form?

Answer 5

Cd+2

Question 6

The tendency to form different ions is the reason why we have to use

Answer 6

Roman numerals in the names of compounds of transition elements to identify which ion is present

Question 7

Aluminum Ion

Answer 7

Al+3

Question 8

Hydride (Hydrogen Ion)

Answer 8

H-1

Question 9

Manganese (II)

Answer 9

Mn+2

Question 10

Nickel (II)

Answer 10

Ni+2

Question 11

Gold (I) or Aurous

Answer 11

Au+

Question 12

Gold (III) or Auric

Answer 12

Au+3

Question 13

Tin (II) or Stannous

Answer 13

Sn+2

Question 14

Tin (IV) or Stannic

Answer 14

Sn+4

Question 15

Lead (II) or Plumbous

Answer 15

Pb+2

Question 16

Lead (IV) or Plumbic

Answer 16

Pb+4

Question 17

Chromium (II) or Chromous

Answer 17

Cr+2

Question 18

Chromium (III) or Chromic

Answer 18

Cr+3

Question 19

Iron (II) or Ferrous

Answer 19

Fe+2

Question 20

Iron (III) or Ferric

Answer 20

Fe+3

Question 21

Cobalt (II) or Cobaltous

Answer 21

Co+2

Question 22

Cobalt (III) or Cobaltic

Answer 22

Co+3

Question 23

Copper (I) or Cuprous

Answer 23

Cu+

Question 24

Copper (II) or Cupric

Answer 24

Cu+2

Question 25

Mercury (I) or Mercurous

Answer 25

Hg2 +2

Question 26

Mercury (II) or Mercuric

Answer 26

Hg+2

Question 27

Group 1, Alkali metals

Answer 27

+1 ; Roman numerals not needed. H is the exception. It can have a +1 charge (as an acid) or a -1 charge (as a hydride with a metal).

Question 28

Group 2, Alkaline Earth

Answer 28

+2 only ; Roman numerals not needed.

Question 29

Group 17, Halogens

Answer 29

-1 in iconic compounds

Question 30

Group 16

Answer 30

-2 charge when monatomic ; Sulfur and oxygen can form polyatomic ions that can be misleading. Peroxide ion is O2^-2, for example

Question 31

Transition metals

Answer 31

Variable, many transition metals have more than one possible charge ; Use Roman numerals. The exceptions are Ag^+1, Zn^+2, and Cd^+2. These don’t form other ions and don’t need Roman numerals.

Question 32

p-Block Metals

Answer 32

Variable, many have more than one possible charge. Some of the semi-metals can form positive or negative ions ; Use Roman numerals. The exceptions are Al^+3 and Po^+2