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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.