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प्रश्न
Select the correct answer to the statement given below:
An element present in the earth’s crust, atmosphere and the human body.
विकल्प
Chalk
Oxygen
Silicon
Bromine
Nitrous oxide
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उत्तर
Oxygen
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संबंधित प्रश्न
Explain the significance of the symbol H.
Fill in the blank:
Symbol represents _____ atom(s) of an element.
State the type of element for the following:
Oxygen
State the type of element for the following:
Copper
State the type of element for the following:
Lead
State the type of element for the following:
Sodium
Give the formula of the following acid:
Nitric
State the valency of the following metallic element and write symbol with the valency
Zinc
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
The pictorial symbol for water given by the alchemists was
