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Subjects
Science CBSE
Class 9
Atoms and molecules
Textbook based HOTS
21.
Multiple Choice Question Answer XXI
Exercise condition:
2
m.
1.
How many moles of electrons weigh one kilogram?
2.
Which has the maximum number of atoms?
Answer variants:
\(1 / 9.108\) × \(10^3{^1}\)
23 g He
23 g Ne
\(6.023\) × \(10^2{^3}\)
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