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Periodic Table Internet Worksheet--Periodic Table 

http://www.chemicalelements.com/

 

Click onto the following elements to find the following information:  atomic number, atomic mass, number of protons, neutrons, and electrons.

 

Element

Atomic Number

Mass

Number

Number of Protons

Number of Neutrons

Number of Electrons

Potassium

(K-19)

 

                 19

                 39

                19

                20

                19

Helium

(He-2)

 

                 2

 

4

 

2

 

2

 

2

Silicon

(Si-14)

 

 

14

 

28

 

28

 

28 

 

28 

Nickel

(Ni-28)

 

 

 

28

 

59

(round to the nearest ones)

 

28

 

31

 

28

Chlorine

(Cl-17)

 

 

 

17

 

35

 

17

 

 

18

 

17

Oxygen

(O-8)

 

 

 

8

 

16

 

8

 

8

 

8

Radium

(Ra-88)

 

 

 

88

 

226

 

88

 

138

 

88

 

 

 

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