Element X has 17 protons, 17 electrons, atomic number 17, representing chlorine with electronic configuration 2, 8, 7 and seven valence electrons. Adding two neutrons raises mass number to 37, forming its isotope.
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Element X has 17 protons, 17 electrons, atomic number 17, representing chlorine with electronic configuration 2, 8, 7 and seven valence electrons. Adding two neutrons raises mass number to 37, forming its isotope.