Ions, Names and Formulas Worksheet

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Name: _________________________________ Class: _________ Date: __________

Ions

How many protons, neutrons and electrons are present in each of the following atoms or ions?

Atom/Ion

24

Mg

24

Mg

2+

59

Co

2+

59

Co

3+

59

Co

79

Se

79

Se

2-

63

Ni

59

Ni

2+

Protons Neutrons Electrons

Common Polyatomic Ions

Write the names and charges of these ions/atoms.

1.

2.

3.

4.

Phosphate Ion

Chlorine Atom

Sulfite Ion

Acetate Ion

5.

6.

7.

8.

9.

Sulfur Atom

Carbonate Ion

Nitrate Ion

Chloride Ion

Oxide Ion

10.

Nitride Ion

11.

Sulfate Ion

12.

Sulfide Ion

13.

Ammonium Ion

14.

Nitrite Ion

15.

Chlorate Ion

16.

Hydroxide Ion

17.

Nitrogen Atom

18.

Oxygen Atom

Writing Chemical Formulas

ALL compounds are

NEUTRAL!!!

Each and every compound has a positive part and a negative part. The

positive

part comes FIRST and the

negative

part comes LAST.

Procedure: 1. Write the chemical symbol of the positive part of the compound first and then write the chemical symbol for the negative part of the compound.

2.

Write the charge (oxidation number) for both the positive and the negative part of the compound.

3.

Since all compounds are

NEUTRAL

, the charges of the chemical formula must be balanced. USE SUBSCRIPTS ONLY!! The total charge of the positive part of the compound MUST EQUAL the total charge of the negative part of the compound so the over all charge is NEUTRAL.

When more than one POLYATOMIC ION is needed—use PARENTHESES. NEVER, EVER, NEVER, use parenthesis with MONATOMIC IONS!!!!!!!!!!

Write the formula for each of the following ionic compounds: a.

b.

Sodium dihydrogen phosphate

Lithium nitride

Chromium (III) carbonate c.

d.

e.

Tin (II) fluoride

Ammonium acetate

Write the formula for each of the following covalent compounds: a.

b.

Sulfur difluoride

Sulfur hexafluoride

Name each of the following compounds. a.

b.

c.

d.

e.

NaCl

RbBr

CsF

AlI

HI

3 f.

g.

h.

i.

j.

f.

g.

h.

i.

j.

Ammonium hydrogen sulfate

Cobalt (III) nitrate

Mercury (I) chloride

Potassium chlorate

Sodium hydride

H

2

Se

NaHSO

4

Ca(HSO

3

)

2

Ru(NO

3

)

3

V

2

O

5

Name each of the following acids/molecular compounds. a.

b.

c.

NO

NF

N

2

3

Cl

2

Using the names below give the correct chemical formula.

1.

2.

3.

4.

5.

Ammonium cyanide

Potassium nitrate

Beryllium hydroxide

Cesium permanganate

6.

7.

8.

9.

Boron iodate

Sodium bicarbonate

Rubidium dihydrogen phosphate

Barium hydroxide

Ammonium hydroxide

10.

Sodium chlorate

11.

Strontium chlorate

12.

Sodium nitrate

13.

Barium acetate

14.

Boron bisulfate

15.

Sodium acetate

16.

Rubidium iodate d.

e.

f.

g.

17.

18.

19.

27.

28.

29.

30.

SiF

H

3

4

HNO

HNO

PO

3

2

4

Potassium permanganate

Cesium bicarbonate

Sodium hydroxide

20.

Hydrogen cyanide

21.

Barium bisulfate

22.

Cesium nitrate

23.

Lithium chlorate

24.

Magnesium permanganate

25.

Calcium cyanide

26.

Beryllium acetate

Magnesium bicarbonate

Lithium bisulfate

Potassium iodate

Calcium bicarbonate

Given the chemical formula, write the correct name.

1.

2.

3.

4.

5.

6.

HOH

LiCN

RbNO3

Be(ClO

3

)

2

Ca(MnO

4

)

2

HCH

3

COO

7.

8.

9.

NH

4

HCO

3

Ba(IO

3

)

2

Mg(HSO

4

)

2

10.

Sr(NO

3

)

2

11.

B(CN)

3

12.

Mg(OH)

2

13.

RbMnO

4

14.

Ba(ClO

3

)

2

15.

Sr(CH

3

COO)

2

Tell how many protons, neutrons and electrons are in each atom.

1.

2.

N

Ca

Kr 3.

4.

5.

W

Hg

16.

RbOH

17.

Be(CN)

2

18.

Ca(NO

3

)

2

19.

KClO

3

20.

CsCH

3

COO

21.

KHCO

3

22.

Mg(HSO

4

)

2

23.

LiIO

3

24.

B(H

2

PO

4

)

3

25.

NaH

2

PO

4

26.

Ba(MnO

4

)

2

27.

LiHCO

3

28.

KHSO

4

29.

CsIO

3

30.

NH

4

H

2

PO

4

Give the period and group in which each of these elements is found.

1.

2.

3.

4.

Nitrogen

Sodium

Iodine

Mercury

Tell how many energy levels each atom has and how many electrons are in each level.

1.

2.

3.

4.

5.

6.

N

Ca

Na

Kr

W

Hg

Give the name for each compound given its chemical formula.

1.

2.

3.

4.

5.

KCl

CsCl

Mg

3

NiCl

P

CuBr

2

2

6.

7.

8.

9.

NiF

3

SnF

4

CaCl

2

MnCl

2

10.

AuCl

3

Give the correct formula for the following names.

1.

2.

3.

4.

5.

6.

Iron (II) sulfide

Copper (I) oxide

Iron (III) bromide

Aluminum sulfate

Manganese (II) cyanide

Silver acetate

7.

8.

9.

Iron (III) phosphate

Zinc (II) carbonate

Lithium sulfide

10.

Aluminum nitride

11.

Cesium fluoride

12.

sodium hydroxide

13.

Gallium (I) iodide

14.

Silver bromide

15.

Tin (IV) chloride

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