# What the symbol for the ion with 19 protons and 18 electrons?

Aug 2, 2018

Well, what does your Periodic Table say? There should be one beside you now.

#### Explanation:

There are 19 protons, i.e. $Z = 19$. The element is NECESSARILY potassium. There is ONE less electron than the defining nuclear charge, so we got ${K}^{+}$. What is the symbol for the ion with 26 nuclear charges, and 23 electrons?