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प्रश्न
State what is meant by the term ‘activity series of metals’.
उत्तर
The positive of metals in the decreasing order of their reactivity is called ‘activity series of metals.’
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संबंधित प्रश्न
The symbols of the elements cobalt, aluminium, helium and sodium respectively written by a student are as
follows. Which symbol is the correct one ?
What is meant by atomicity? Name the diatomic element.
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Phosphate
Give the symbol of the following element:
Arsenic
Give the symbol of the following element:
Iodine
Give the symbol of the following element:
Platinum
Write the radical of the following valency:
Sulphur [Sulphide]
Write the chemical formula of the following:
calcium carbonate
Which of the following symbols of elements are incorrect? Give their correct symbols
- Cobalt CO
- Carbon c
- Aluminium AL
- Helium He
- Sodium So
Write a note on Greem symbols.
