Indicate the total number of protons and electrons in the ion.

Question

For the positive ions in the list, predict the formula of the simplest compound formed between each positive ion and the oxide ion

(a) Fe2

protons:

electrons:

compound (Type the compound using the format H2O for H2O.)

Answer 1

Iron has an atomic number of 26 which means it has 26 protons.  Given the +2, it is short 2 (negatively charged) electrons which causes the positive charge, so it would have 24 electrons.The simplest compound with the oxide ion is FeO (ferrous oxide or iron (ll) oxide) where Fe is +2 and O is -2.

Answer 2

Fe(II)

protons:  26

electrons: 24

FeO

Answer 3

FeO.  Neutral iron has 26 protons and (mostly) 30 neutrons; if ionized to the +2 state, it would have 24 electrons.