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Science TNSB Mentoring
Class 10
Atoms and molecules
Introduction to atom and its mass
2.
Atomicity - I
Question:
2
m.
1
.
Who proposed the first scientific theory of an atom?
Ruther Ford
Newland
John Dalton
Neils Bohr
2
.
The natural abundance of \(C-12\) and \(C-13\) are \(98.90\)% and \(1.10\)%, respectively. The average atomic mass of carbon is
\(12.90\) \(amu\)
\(12\) \(amu\)
\(14\) \(amu\)
\(12.011\) \(amu\)
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