Asked by Maria

which is the symbol for the following monatomic ion?
8 protons and 10 electrons
Answered by DrBob222
The 8 tells you to look on the periodic table at element #8, which is oxygen. Neutral oxygen has 8 protons and 8 electrons. Since this question shows oxygen with 10 electrons, it means it must have a -2 charge. The symbol is O<sup>=</sup>.(O with a negative 2 charge); i.e., the oxide ion.