State the postulates of Dalton's Atomic Theory.
Answers
i) Every matter is made up of small particles called atoms.
ii) Atoms can neither be created nor be destroyed in a chemical reaction.They are indivisible particle.
iii) Atoms of given element are identical in mass as well as in chemical properties.
iv) Atoms of different elements have different masses and chemical properties.
v) Atoms combine in the ratio of small whole numbers to form compounds.
vi) The relative numbers as well as kinds of atoms are constant in a given compound
Hope This Helps You!
Dalton is a scientist who formulated certain postulates to define structure of atom....
His postulates are:
1.Each element is composed of extremely small particles called atoms.
2.Atoms of all given element are identical,the atoms of different elements are different and have different properties.
3.Atoms are neither created not destroyed in chemical reactions.
4.Compounds are formed when more than one element combine, a given compound always has the same relative number and kind of atoms.
5. When elements combine together they always combine in ratio of whole numbers
6.Atoms of a single element may combine in different ratios when they form more than one compound
7. An atom is the smallest particle that takes part in chemical reaction.
But his theory was discarded due to certain discoveries made later.
Foe ex:The first postulate was discarded when they found sub atomic particles like protons,electrons and neutrons
Hope this helped !!!! ..