A. electrons are negatively charged
B. electrons have a negligible mass
C. nuclei of atoms are positively charged
D. protons are positively charged
Correct Answer:
Option C – nuclei of atoms are positively charged
Explanation
The model of an atom put forward by Ernest Rutherford in 1911 on the basis of experiments on the scattering of alpha particles. The model consisted of a very dense positively charged nucleus, with electrons orbiting round the nucleus.
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