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03-12-2021
Chemistry

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which noble gas has an atom with the same number of electrons as a chloride ion in table salt?

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03-12-2021

Answer:

Argon (Ar)

Explanation:

Chlorine has an atomic number of 17. That means that it has 17 protons and 17 electrons, thus being electrically neutral. When it gains 1 electron to form the chloride ion, the total number of electrons is 17 + 1 = 18.

Argon is a noble gas with an atomic number of 18, which means it has 18 electrons.

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