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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
An element which can exhibit valencies of 2, 4 and 6 can be :
Out of ozone, phosphorus, sulphur and krypton, the elements having the lowest and highest atomicities are respectively :
Give the symbol of the following element:
Antimony
Write the radical of the following valency:
Bromine [Bromide]
Write the radical of the following valency:
Phosphate
Give the formula of the following acid:
Sulphuric
Give the formula of the following gas:
Nitrogen
Name three metals whose symbols are derived from the first letter of the name of the element.
Which of the following symbols of elements are incorrect? Give their correct symbols
- Cobalt CO
- Carbon c
- Aluminium AL
- Helium He
- Sodium So
What is the rarest natural element on the earth?
