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प्रश्न
State which element exists in the highest percentage in human body.
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उत्तर
Oxygen (O) – 65%
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संबंधित प्रश्न
Give the symbols and valencies of following radicals:
(a) Hydroxide (b) Chloride
(c) Carbonate (d) ammonium
(e) Nitrate
Name the elements represented by the following symbols :
Hg, Pb, Au, Ag, Sn
Give the symbol and the number of atoms of the following elements present in water.
Give the symbol of the following element:
Arsenic
State the type of element for the following:
Lead
Give the symbol of the following element:
Magnesium
Write the radical of the following valency:
Sulphite
Write the radical of the following valency:
Sulphate
Select the correct answer to the statement given below:
An element present in the earth’s crust, atmosphere and the human body.
Name three metals whose symbols are derived from the first letter of the name of the element.
