vnfrancis3716
14.12.2020 •
Chemistry
the atomic number of an element is the number of plus the number of found in the element's nucleus.
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Ответ:
protons and electrons
Explanation:
The symbol for an atom can be written to show its mass number at the top, and its atomic number at the bottom. To calculate the numbers of subatomic particles in an atom, use its atomic number and mass number: number of protons = atomic number. number of electrons = atomic number.
Ответ:
4 salt is a soluble substance
Explanation: