What do all atoms and ions of sodium have in common?
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Ответ:
They all have the same number of protons (12).
The number of protons (the atomic number) is the same for all atoms and ions of Na.
However, atoms and ions have different numbers of electrons.
An Na atom has 11 electrons, but an Na^(+) ion has only 10 electrons.
Ответ:
The name of a compound usually gives you all the information you need to write its chemical formula. The first part of the name denotes the cation, or positively charged ion that forms the molecule, while the second part denotes the anion, or negative ion.
Explanation: