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3 February, 23:27

Non-metal liquid with 45 neutrons

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  1. 4 February, 00:30
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    Bromine is a liquid that has an atomic number of 35 and an atomic weight of about 80. Since the mass of protons and neutrons are approximately 1, we can know that subtracting the weight of the protons from the atomic weight will result in the number of neutrons.

    80 - 35 = 45
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