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प्रश्न
State what is meant by the term ‘activity series of metals’.
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उत्तर
The positive of metals in the decreasing order of their reactivity is called ‘activity series of metals.’
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संबंधित प्रश्न
Explain the terms ‘chemical formula’.
Select the correct answer from the choice given below.
The symbol of mercury is
Give the symbol of the following element:
Phosphorus
State the type of element for the following:
Oxygen
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Mercury
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
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).
Sulphite
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).
Plumbite
What does the symbol '(s)' present in a chemical equation, mean?
Mass of one atom of oxygen is
