BIOELEMENTS AND THEIR PERCENTAGES
The elements which are used in formation of various chemical compounds from which living organisms are made are called Bio-elements.
Out of 92 naturally occurring chemical compounds, only 16 are bio-elements and out of these 16 only 6 account for 99% of the total mass in human body.
Percentages of Bio-Elements by Mass in Human Being
| Oxygen 65% |
| Carbon 18% |
| Hydrogen 10% |
| Nitrogen 3% |
| Calcium 2% |
| Phosphorous 1% |
| Potassium 0.35% |
| Sulphur 0.25% |
| Chlorine 0.15% |
| Sodium 0.15% |
| Magnesium 0.05% |
| Iron 0.004% |
Some elements like Copper, Manganese, Zinc and iodine are present in Traces.

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