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The atomic we...

Question

The atomic weight of carbon is .

A

12u

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B

30u

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C

18u

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D

6u

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Solution

The correct option is A 12u
The atomic weight of carbon is numerically same as the mass number of carbon, i.e., 12. Carbon is made up of 6 protons, 6 electrons, and 6 neutrons.

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The mass number of an atom tells us about its atomic weight. What is the atomic weight of carbon?

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and it is constant. Reason: The atomic weights of carbon and oxygen are constant.

Q. The carbonate of a metal is isomorphous (similar formula) with magnesium carbonate and contains 6.091 percent of carbon. The atomic weight of metal is:

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