Read the statements carefully and choose the correction option from the following:
i) Both A and R are true and R is the correct explanation of the assertion.
ii) Both A and R are true but R is not the correct explanation of the assertion.
iii) A is true but R is false.
iv) A is false but R is true.
Assertion: Atoms are indivisible.
Reason: Atoms cannot be seen with naked eye.
Answers
Answer : iv) A is false but R is true.
Reasoning : Atoms are not indivisible . But yes they can't be seen with naked eyes . Atoms are further divided into protons , electrons and neutrons . Therefore A is false but R is true .
More to know : Matter is made up of molecules and molecules are made up of atoms . Atoms are made up of protons , electrons and neutrons . Protons were discovered by Ernest Rutherford . Neutrons were discovered by J Chadwick . Electrons were discovered by J J Thomson . There are many atomic models for example Rutherford model , Thomsan model , Bohr's atomic model etc . The atomic number is equal to the number of protons in the atom . And the number of protons are equal to the number of electrons . The sum of number of protons and neutrons gives us the atomic mass of the element .
Answer:
iv) A is false but R is true.
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