Explain how this simulation relates to earth’s gravity as it orbits the sun.
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Ответ:
The symbol of the element is Kr, the mass number is 85 and the number of protons is 36.
A neutral isotope must have the same number of negative charges (electrons) as positive charges (protons). Thus, this isotope has 36 protons, which is what defines its atomic number (Z). Given Z, we can search in the Periodic Table and find that the element is Krypton, whose symbol is Kr.
The mass number (A) is the sum of the number of protons and neutrons.
The symbol of the element is Kr, the mass number is 85 and the number of protons is 36.
You can learn more about mass number here: