Which of the following explains how one of the postulates in John Dalton's atomic theory later became robust knowledge? (5 points) O Some scientists found that some atoms of a particular element have different number of neutrons.
O Various scientists found that atoms combine in simple whole number ratios to form compounds.
O Some scientists found that atoms consist of subatomic particles with varying mass and charge.
O Various scientists found that sometimes a fraction of an atom can take part in a chemical reaction.

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.

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