2. Which of the following pairs have identical values of e/m?
1) A proton and a neutron
2) A proton and deuterium
3) Deuterium and an a- particle
4) An electron and y- rays
Answers
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4
Explanation:
The charge to mass ratio depends on the charge and the mass of the substances that are being compared. An α-particle has 2 protons and 2 neutrons. Deuterium has one proton and one neutron. Hence, they have identical values of e/m.
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4
Answer:
the answer is option 3
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