Chemistry
Assertion (A): Matter consists of very small particles called atoms.
Reason (R): Atoms are indivisible.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Atomic Structure
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Answer
A is true but R is false.
Explanation — Atoms are not indivisible, they can be further divided into fundamental particles electrons, protons and neutrons.
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Related Questions
The sum of number of protons and number of neutrons present in the nucleus of an atom is called its
- mass number
- atomic number
- valency
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The correct electronic configuration of sodium is:
- 2, 8, 1
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- 8, 1, 2
Assertion (A): An atom is electrically neutral.
Reason (R): The number of protons and the number of electrons are equal in an atom.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
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Assertion (A): The nucleus of an atom is a centrally located mass containing protons only.
Reason (R): The nucleus of an atom is positively charged.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
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