Partical A has very little mass in comparison to partical B. Both Particals are in the same atom. which is the best conclusion about Particals A and B? A. They have opposite charges
B. They are located in the nucleus together.
C. Partical A has a negative charge, and Partical B is neutral.
D. Partical A orbits the nucleus, and Partical B is located in the nucleus

D. Particle A orbits the nucleus, and Particle B is located in the nucleus

Explanation:

Here since both particles are of the same atom and particle A is much lighter we can infer that Particle A is electron because electrons are much lighter than protons which are Particle B in this case. Thus, particle A orbits nucleus as an electron does and particle B is in nucleus where protons are.

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