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.

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of carbon is as shown here in the image.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.