Tag: symbol
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Class 9th – ATOMIC MASS OF AN ELEMENT
Atoms of elements are very small. To understand about atomic mass, it is a need to know about Carbon-12. Carbon-12 can be stated as no. of protons= 6 & no. of neutrons= 6 thus making it as 12. Carbon-12 atoms has been made as atomic mass of exactly 12 atomic mass unit. Earlier the unit…