Question

what does.
"The relative number and kinds of atoms are constant in a given compound".
postulate of Dalton's atomic theory mean?​

Answer 1

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Explanation:

The postulates of this theory may be stated as follows:

1. Matters are composed of very tiny particles called atoms.
2. These particles are too small to see and cannot be created or destroyed in a chemical reaction.
3. Atoms of a specified element are identical in mass and chemical properties.
4. Atoms of different elements have different masses and chemical properties.
5. Atoms combine in the ratio of small whole numbers to form compounds.
6. The relative number and kinds of atoms are constant in a given compound.

Answer 2

"The relative number and kinds of atoms are constant in a given compound" postulate of Dalton's atomic theory means that in a compounds the combining atoms will always combine in a certain specific ratio.

Explanation:

• Accroding to the Dalton's atomic theory, all matter was composed of atoms, indivisible and indestructible building blocks. While all atoms of an element were identical, different elements had atoms of differing size and mass.

• Therefore, the statement relative number and kinds of atoms are constant in a given compound means that in a compounds the combining atoms will always combine in a certain specific ratio.

• For example, chemical formula of water is $H_{2}O$ and in this compound both hydrogen and oxygen atoms will always react in 2:1 ratio. Similarly, atoms of all the compounds combine in a specific ratio.

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