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Question
State Dalton's atomic theory.
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Solution
Main postulates of Dalton's atomic theory:
- Matter consists of very small and indivisible particles called atoms.
- Atoms can neither be created nor be destroyed.
- The atoms of an element are alike in all respects, but they differ from the atoms of other elements.
- Atoms of an element combine in small numbers to form molecules.
- Atoms of one element combine with atoms of another element in a simple ratio to form molecules of compounds.
- Atoms are the smallest units of matter which can take part in a chemical reaction.
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Multiple Choice Questions
The number of electrons in an atom is equal to number of
How does the existence of isotopes contradict Dalton’s atomic theory?
TRUE \ FALSE
Uranium-235 and uranium-238 both undergo nuclear fission.
ANSWER IN DETAIL
What are the various components of a nuclear power plant?
ANSWER IN DETAIL
How are radioactive radiations useful in medicines ?
Which part of atom was discovered by Rutherford?
State one major drawback of Rutherford's model.
Explain in brief the experimental proof which led to the discovery of –
Atomic nucleus
