1+ 2+ 3+ 3– 2– 1–

charges vary

but always

+

transition

metals

Transition Metal Ions

charges vary but always +

nucleus

Write the electron configuration

for iron (Fe):

2s21s2 2p6 3p63s2 4s2 3d6

How many valence e–’s in iron(Fe)?

2

What charge will an Fe ion have?

Fe2+

or

Fe3+

2s21s2 2p6 3p63s2 3d6

2s21s2 2p6 3p63s2 3d5

nucleus

Write the electron configuration

for zinc (Zn):

2s21s2 2p6 3p63s2 4s2 3d10

How many valence e–’s in zinc (Zn)?

2

What charge will an Zn ion have?

Zn2+ 2s21s2 2p6 3p63s2 3d10

tin(II) fluoride

is added to toothpastes to prevent cavities.

tin(IV) sulfide

is used in glazes for porcelain

fixtures.

Sn 2+ – Sn S4+ 2–F

SnF2

SnS2

Transition metals

use a Roman numeral

in ( ) to show the charge.

1. When metals from groups 1A, 2A, and 3A form cations, the charge on the ion is equal to…

A. 8 minus the group number.

B. the group number minus 8.

C. the period number.

D. the group number.

Quick Quiz!

2. What is the correct name for this ion? Cu2+

A. copper ion

B. copper II ion

C. copper(II) ion

D. copper(2+) ion

Quick Quiz.

3. What is the correct symbol for the lead(IV) ion?

A. Pb5–

B. Pb4–

C. Pb5+

D. Pb4+

Quick Quiz.

4. What is the formula for iron(II) iodide?

A. Fe2I

B. FeI2

C. Fe2I2

D. FeI

Quick Quiz.

5. The correct name for CrCl3 is ________.

A. chromium chloride.

B. chromium(I) chloride.

C. chromium trichloride.

D. chromium(III) chloride.

Quick Quiz.