A. neutron and proton
B. proton and electron
C. proton and ions
D. neutron and electron
Correct Answer:
Option A – neutron and proton
Explanation
The nucleus contains two types of subatomic particles, protons and neutrons.
The protons have a positive electrical charge and the neutrons have no electrical charge.
A third type of subatomic particle, electrons, move around the nucleus.
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