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प्रश्न
Write the chemical formula of the following:
zinc oxide
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उत्तर
ZnO
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संबंधित प्रश्न
Give the names and symbols of five familiar substances which you think are elements.
The atoms of which of the following pair of elements are most likely to exist in free state ?
Write the radical of the following valency:
Chlorine [Chloride]
Write the chemical formula of the following:
aluminium chloride
Select the correct answer to the statement given below:
An element present in the earth’s crust, atmosphere and the human body.
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Copper
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).
Bicarbonate
What does the symbol '→' present in a chemical equation, mean?
The first letter of a symbol is always written as a ______ letter and the second letter as a ______ letter.
Write a note on Greem symbols.
