What do an orgasm, a multiplication problem and a photo of a dead body have in common? Each induces a slight, irrepressible expansion of the pupils in our eyes, giving careful observers a subtle but meaningful signal that thoughts and feelings are afoot. For more than a century, scientists have known that our pupils respond to more than changes in light.
Review. 1  Atoms have their electrons arranged in layers called shells. 2  In order to maintain electrical balance the number of electrons is equal to the number of protons in most elements.
Well it depends on the atom. Like for instance Hydrogen has 1 electron and 1 proton and Nitrogen has 7 protons and 7 electrons. If the atom is charged, then the number of prot â¦ ons and electrons are not equal.For example, hydrogen ion with +1 charge has 1 proton and 0 electrons.If the number of electrons is the same as the number of protons, then it is said to be neutral.ulfur's atomic number is 16. Neutral sulfur would then have 16 protons and 16 electrons. Since we're dealing with S 2- though, we need to add 2 electrons to this, making 18.