Q.

Which of the following does the Nucleus of an atom consist of?

A. Protons and neutrons
B. Protons and electrons
C. Electrons
D. Protons
Answer» A. Protons and neutrons
Explanation: The nucleus is the small, dense region consisting of protons and neutrons at the center of an atom. Protons and neutrons are bound together to form a nucleus by the nuclear force. The atomic nucleus was discovered in 1911 by Ernest Rutherford based on the 1909 Geiger-Marsden gold foil experiment.
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