Assertion :The mass spectrometer is used for determination of the atomic mass of isotopes.
Reason: Isotopes are the atoms of the same element having a same atomic number but different mass numbers.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is incorrect but Reason is correct

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
An atom's mass number tells you the number of protons and neutrons that atom has in its nucleus. Atoms that have the same atomic number, but different mass numbers are called isotopes.
Hence, the given Reason is true.
Also, the mass spectrometer is used for the determination of the atomic mass of isotopes.
Hence,the given Assertion is also true and Reason is the correct explanation for Assertion.

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Similar questions

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Reason (R) Order is determined experimentally and molecularity is the sum of the stoichimetric coeffcient of rate determining elementary step.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

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Q. Assertion: The compressibility factor for

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Assertion :The mass spectrometer is used for determination of the atomic mass of isotopes. Reason: Isotopes are the atoms of the same element having a same atomic number but different mass numbers.

Assertion :The mass spectrometer is used for determination of the atomic mass of isotopes.
Reason: Isotopes are the atoms of the same element having a same atomic number but different mass numbers.