Question

what are the things required for writtin a molecular formula of a compound​

Answer 1

☞When it comes to writing a molecular formula of different compounds, you will need to use a set of prefixes to indicate the number of atoms of each element in the molecule. Let us write a formula of nitrogen dioxide:

There are two elements in this compounds namely Nitrogen and oxygen. The absence of a prefix on nitrogen and the "di" (one of the prefixes) in front of oxide indicates 2atoms of oxygen. So the formula is: NO2.

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Answer 2

A molecular formula consists of the chemical symbols for the constituent elements followed by numeric subscripts describing the number of atoms of each element present in the molecule. The empirical formula represents the simplest whole-integer ratio of atoms in a compound.

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