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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
State the type of element for the following:
Silicon
State the type of element for the following:
Platinum
State the type of element for the following:
Phosphorus
Write the radical of the following valency:
Sulphur [Sulphide]
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Iron
write symbol with the variable valency
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Tin
write symbol with the variable valency
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Lead
write symbol with the variable valency
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Sulphide
Name the elements with the following symbols.
- Na
- W
- Ba
- Al
- U
The first letter of a symbol is always written as a ______ letter and the second letter as a ______ letter.
