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Mole Concept

The atomic nu...

Question

The atomic number of carbon is 6 and number of neutron is equal to 6. What is the atomic mass of carbon?

A

14 u

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B

10 u

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C

12 u

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D

11 u

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Solution

The correct option is C 12 u
Atomic number of carbon $= 6$ .
Therefore, number of proton $= 6$ .
Now, atomic mass $=$ number of proton + number of neutron
Atomic mass or mass number $= 6 + 6 = 12 u$ .
Thus, mass number or atomic mass of carbon $= 12 u$ .

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