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3. a)29
4. a)3:7
5. c) helium atoms(he2+) which were also called alpha particles
4. a)3:7
5. c) helium atoms(he2+) which were also called alpha particles
falgunichapekar:
Steps
Atomic no gives the ans for 1st
OK
4 the 1
4. Mass of C=12 protons =6 so neutrons=6
Mass of silicon=28 protons=14
So neutrons=14
Ratio 6/14=3:7
Mass of silicon=28 protons=14
So neutrons=14
Ratio 6/14=3:7
I hope u got it
Ya
Ty
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