# What Value Has Been Given to the Mass of this Reference Atom ? - Science

Short Note

What value has been given to the mass of this reference atom ?

#### Solution

Carbon-12 atom has been given a mass of exactly 12 units (""^12"_6C has six protons and six neutrons).

Concept: Atoms: Building Blocks of Matter
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#### APPEARS IN

Lakhmir Singh Class 9 Chemistry - Science Part 2
Chapter 3 Atoms and Molecules
Short Answers | Q 21.3 | Page 129