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9 December, 01:17

How many protons, neutrons, and electrons are there in 70Se2-?

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  1. 9 December, 01:21
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    The answer to your question is Protons = 36, Neutrons = 26, Electrons = 36

    Explanation:

    ⁷⁰Se²⁻

    The number of protons is equal to the atomic number, Selenium has an atomic number of 34. Then the number of protons = 34.

    The number of neutrons = Mass number - number of protons

    = 70 - 34

    = 36

    The number of electrons = number of protons + 2 because of the 2 - next to the symbol of Selenium.

    Number of electrons = 34 + 2

    = 36
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