Molecules And Compounds - Chemistry Worksheet Page 3
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9Example: Write the name for each of the cations below:
+
2+
Ag
= __________________________
Hg
=
________________________
+
4+
Li
=
__________________________
Pb
=
________________________
+
2+
K
=
__________________________
Cd
=
________________________
2+
3+
Zn
= __________________________
Al
=
________________________
3+
+2
Ni
= __________________________
Sr
=
________________________
3+
+
H
=
__________________________
Cr
=
________________________
ANIONS: negatively charged ions
– Nonmetal atoms gain electrons to form anions
–
–
–
–
– Group VIIA elements form –1 ions: F
, Cl
, Br
, I
2–
2–
– Group VIA elements form –2 ions: O
, S
3–
3–
– Group VA elements form –3 ions: N
, P
→
2–
element stem name +”ide” + ion:
O=oxygen
O
= oxide ion
–
3–
F
=
_____________________
N
= _____________________
2–
–
S
= _____________________
Cl
= _____________________
–
3–
Br
= _____________________
P
= _____________________
Know the monatomic ions formed by the following Representative Elements and the
four elements that form only one charge!
Example: Give the formulas for each of the following ions:
calcium ion = __________
nitride ion = __________
phosphide ion = ________
sulfide ion = __________
potassium ion = __________
fluoride ion = ________
silver ion =
__________
aluminum ion = __________
zinc ion = __________
CHEM 121: Tro Chapter 5
page 3 of 9
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