Which species has 16 protons 16 neutrons and 18 electrons?

1.	Which species has 16 protons 16 neutrons and 18 electrons?
Answer» Dually ionised Silicon (S -2) No of PROTONS = Atomic NUMBER(Silicon = 16) No of electrons = Atomic number (16) + 2 electrons (ANION) = 18 No of neutrons= Mass number - Atomic Number = 32-16= 16

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