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Q.

1/12th of the mass of 1 atom of carbon-12 is called


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a

Weight 

b

Molar mass

c

Mass of atom

d

Atomic mass unit

answer is A.

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Detailed Solution

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1/12th of mass of 1 atom of carbon-12 is called atomic mass unit.
The atomic mass unit is a measure of the atomic mass. The atomic mass unit expresses both atomic and molecular masses. It is the average of proton and neutron rest mass. Atomic mass unit is 1/12th of mass of 1 atom of carbon-12. It is standard unit taken in chemistry for measurement of a mass of the elements . it is denoted by “u”
 
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1/12th of the mass of 1 atom of carbon-12 is called