Which statement correctly describes part of the atomic model?
a. atoms are made only of protons and electrons.
b. the nucleus is made of protons and electrons.
c. protons are outside the nucleus.
d. electrons are outside the nucleus

D

Explanation:

In an atomic model of an atom, the nucleus consists of protons and neutrons while the electrons revolves round its orbitals outside the nucleus. The protons are positively charged while the electrons are negatively charged so as to counter electric charges and make the atom electrically neutral.

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl