Question

define chemical formula and how to write the chemical formula

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Answer 1

Answer:

A chemical formula is a notation used by scientists to show the number and type of atoms present in a molecule, using the atomic symbols and numerical subscripts. In a chemical formula, the letters represent the atomic symbol of each atom. ..

Step-by-step explanation:

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Answer 2

Answer:

chemical formula is a notation used by scientists to show the number and type of atoms present in a molecule, using the atomic symbols and numerical subscripts. ... In a chemical formula, the letters represent the atomic symbol of each atom.

To write the chemical formula of a binary compound.

1)Determine the valencies of the two elements present.

2)Write the chemical formula such that the sums of the valencies of the two elements are equal.

3)Do this by determining the lowest common multiple of the two valencies.

4)If a metal is present, always place it first in the formula.