Formula of Binary Compounds
Formula of Binary Compounds
Writing chemical formulae: The shortest way to represent a compound with the help of symbols and valency of elements is known as chemical formula. Chemical formula of a compound shows its constituent elements and the number of atoms of each combining element. In ionic compounds, the charge on each ion is used to determine the chemical formula of a compound. There are some rules for writing the chemical formula:
In case if the number of polyatomic ion is one, the bracket is not required. e.g. NaOH.
Formulae of Simple Compounds: To write the chemical formula for simple compounds:
The formula of a chloride of a metal M is | |||
| Right Option : A | |||
| View Explanation | |||
Arrange the statements in a systematic way of writing the chemical formula for simple compounds: (a) Write the symbol of cation first followed by the symbol of anion. (b) Write the symbols of constituent elements and their valencies. (c) The positive and negative charges must balance each other and the overall structure must be neutral. (d) Then criss-cross their charges or valencies to get the formula. | |||
| Right Option : B | |||
| View Explanation | |||
The combining elements in a molecule of carbon dioxide are ____________ | |||
| Right Option : C | |||
| View Explanation | |||
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