Protons, Neutrons, and Electrons Practice Worksheet

Protons, Neutrons, and Electrons Practice Worksheet

(adapted from hrsbstaff.ednet.ns.ca/holmesdl/Science 10 Chemistry/Nicole MacNeil's chemistry unit/protons_neutrons_and_electrons_practice_ws.docx)

Use the periodic table to find the numbers of protons, neutrons, and electrons for atoms of the following elements.

Name of Element

Element

Symbol

Mass

Number

Atomic

Number

Protons

Neutrons

Electrons

Hyphen notation

Isotope

symbol

Boron

B

11

5

5

6

5

boron-11

11

5?

24

11

31

37

Sodium

Gallium

Y

89

Copper

39

29

Tc

98

Pb

207

35

43

Ytterbium

103

Ac

227

89

Mo

Thallium

54

204

Fm

No

81

100

157

259

H

Carbon

0

12

N

7

70

Name of Element

Element

Symbol

Mass

Number

Atomic

Number

Protons

Neutrons

Electrons

Hyphen notation

hydrogen-1

Ba

56

2

2

Calcium

Si

Argon

14

18

Mg

12

106

12

159

Isotope

symbol

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