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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
Why is the symbol S for sulphur, but Na for sodium and Si for silicon?
What do the following symbol stand for?
H
State which element exists in the highest percentage in human body.
Give the symbol of the following element:
Mercury
State the type of element for the following:
Sodium
Write the radical of the following valency:
Sulphite
Give the formula of the following acid:
Nitric
State the valency of the following metallic element and write symbol with the valency
Potassium
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
Which of the following symbols of elements are incorrect? Give their correct symbols
- Cobalt CO
- Carbon c
- Aluminium AL
- Helium He
- Sodium So
