Element Name, Symbol, Number and Weight

Group Number and period (see table)

Group Name

Biological Role of element

(click on biology on side panel)

Melting/ Boiling point (degrees F) (click on Physical Data)

Non-radioactive Isotopes/

Name and Mass (click on Nuclear Data, and round to the nearest hundredths)

Natural abundance

Sodium

Na

11

23 (round to the nearest ones)

1

3

Alkali metal

It is a vital element.

The human diet must contain a sensible amount of sodium. 

207.9 F

melting

1621 F

boiling

Na(23)

22.99

100

Carbon

C

6

12

14

2

None

Carbon is present in all organic compounds.

6381 F

melting

7281 F

boiling

C(12)

12.00

C(13)

13.00

98.93

1.07

Helium

He

2

4

18

1

Noble gas

No biological role

-458 F

melting

-452.07

boiling

He(3)

3.02

He(4)

4.00

Less than 1

100

Zinc

Zn

30

65.41

12

4

None

It is essential in the diets of plants and animals.

787.15 F

melting

1665 F

boiling

Zn(64) 63.93

Zn(66) 65.93

Zn(67) 66.93

Zn(68) 67.92

Zn(70) 69.93

48.63

27.90

4.10

18.75

.62

Iodine

I

53

126.90

17

5

Halogen

It is an essential component of the human diet. (Lack of it causes goiter).  It is also useful in medicine.

236.7 F

melting

363.7 F

boiling

I(127)

126.90

100

Silver

Ag

47

108

11

5

Coinage Metal

No biological role

1763.2 F

melting

3924 F

boiling

Ag(107)

106.91

Ag(109)

108.90

51.84

48.16