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a couple of elements fromt the periodic table for biology 102 at Liberty University.

O

Atomic Symbol of Oxygen

C

Atomic Symbol of Carbon

H

Atomic Symbol of Hydrogen

N

Atomic Symbol of Nitrogen

Ca

Atomic Symbol of Calcium

P

Atomic Symbol of Phosphorus

K

Atomic Symbol of Potassium

S

Atomic Symbol of Sulfur

Na

Atomic Symbol of Sodium

Cl

Atomic Symbol of Chlorine

Mg

Atomic Symbol of Magnesium

Fe

Atomic Symbol of Iron

8

Atomic number of oxygen

6

Atomic number of Carbon

1

Atomic number of hydrogen

7

Atomic number of Nitrogen

20

Atomic number of Calcium

15

Atomic number of Phosphorus

19

Atomic number of Potassium

16

Atomic number of Sulfur

11

Atomic number of Sodium

17

Atomic number of Chlorine

12

Atomic number of Magnesium

26

Atomic number of Iron

16.0

Atomic mass of Oxygen

12.0

Atomic mass of Carbon

1.0

Atomic mass of Hydrogen

14.0

Atomic mass of Nitrogen

40.1

Atomic mass of Calcium

31.0

Atomic mass of Phosphorus

39.1

Atomic mass of Potassium

32.1

Atomic mass of Sulfur

23.0

Atomic mass of Sodium

35.5

Atomic mass of Chlorine

24.3

Atomic mass of Magnesium

55.8

Atomic mass of Iron

65

% of human weight of Oxygen

18

% of human weight of Carbon

10

% of human weight of Hydrogen

3

% of human weight of Nitrogen

2

% of human weight of Calcium

1

% of human weight of Phosphorus

0.3

% of human weight of Potassium

0.2

% of human weight of Sulfur

0.1

% of human weight of Sodium

trace

% of human weight of Chlorine

trace

% of human weight of Iron

Oxygen

Part of water and most organic molecules

Carbon

The backbone of all organic molecules

Hydrogen

Part of all organic molecules and of water

Nitrogen

Component of proteins and nucleic acids

Calcium

Constituent of bone. also essential for the action of nerves and muscles

Phosphorus

Part of cell membranes and of energy storage molecules. Also constituent of bone.

Potassium

important in nerve action

Sulfur

Structural component of most proteins

Sodium

The primary ion in body fluids. Also important to nerve action.

Chlorine

Component of digestive acid. Also major ion in body fluids.

Magnesium

Important for the action of certain enzymes and for muscle contraction

Iron

A constituent for hemoglobin, the oxygen-carrying molecules.

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