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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
Which particular atom of the above element is used for this purpose ?
Explain the terms 'valency' and 'variable valency'.
Match the formulas of the following of bases with their correct names.
Bases – (a) NaOH (b) KOH (c) Ca(OH)2 (d) Zn(OH)2
Names – (1) Potassium hydroxide (2) Zinc hydroxide (3) Aluminium hydroxide (4) Calcium hydroxide (5) Sodium hydroxide
Give the symbol of the following element:
Phosphate
Write the radical of the following valency:
Sulphur [Sulphide]
State the valency of the following metallic element and write symbol with the valency
Magnesium
What does the symbol '(l)' present in a chemical equation, mean?
What does the symbol '(g)' present in a chemical equation, mean?
How many elements are known at present?
What is the expansion of IUPAC.
