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प्रश्न
Define the term ‘valency’.
उत्तर
Valency is the number of hydrogen atoms which combine with (or displace) one atom of the element forming a Compound.
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संबंधित प्रश्न
Name the elements represented by the following symbols :
Hg, Pb, Au, Ag, Sn
What do the following symbol stand for?
2H
An atom of an element is denoted by a “symbol”. Explain the meaning of the term ‘symbol’. State a reason for representing the following element by its symbol.
Hydrogen by ‘H’
Select the correct answer from the choice given below.
The symbol of mercury is
Give the symbol of the following element:
Carbonate
Give the formula of the following acid:
Hydrochloric
Give the formula of the following acid:
Carbonic
Give the formula of the following gas:
Nitrous oxide
Name the following:
An acid whose formula is ‘H2CO3’.
Mass of one atom of oxygen is
