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- To determine the number of electrons:
- For a neutral atom, the number of electrons is the same as the number of protons1.
- For an ion, you can determine the number of electrons if you know its charge. A cation carries a positive charge and has more protons than electrons2.
- To calculate the number of electrons in a compound, multiply the atomic number by the number of atoms and add them together3.
Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.Elements are placed in order on the periodic table based on their atomic number, how many protons they have. In a neutral atom, the number of electrons will equal the number of protons, so we can easily determine electron number from atomic number.www.khanacademy.org/science/ap-chemistry-beta/…For a neutral atom, the number of electrons is the same as the number of protons. Often, the number of protons and electrons is not the same, so the atom carries a net positive or negative charge. You can determine the number of electrons in an ion if you know its charge. A cation carries a positive charge and has more protons than electrons.www.thoughtco.com/protons-neutrons-and-electron…To get the total number of electrons, you multiply the atomic number by the number of atoms then add them together. Therefore, there are 42 electrons in KNO₂. This is a neutral (with no charge) compound. In instances where the compound has a negative charge, you add the charge value to the number of electrons found.www.learntocalculate.com/how-to-calculate-electro… - People also ask
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