Question

An ion in the second column of the periodic table has 74 protons. How manyelectrons does it have? (Hint: Remember that the position on the periodic tableallows you to predict the charge of an ion).

Answer 1

First thing we need to do is identify this element, with the number of protons we can use it to predict which element it is, since number of protons is equal to the atomic number of an atom, therefore this atom has 74 protons and 74 of atomic number, this is the atom Tungsten (chemical symbol W). Now, tungsten is in a position of the periodic table in which it is not easily possible to precit its ionic charge, as almost all transition elements, but some experimental charts give us the information that W has a +6 charge, this means that in a ionic form, Tungsten will have 68 electrons