Cation Labster Theory Notes

A set of vocabulary flashcards based on the Labster theory page regarding cations and the specific example of potassium.

Cation

A positively charged ion (pronounced cat-ion) that results from the loss of electrons.

Potassium (K) atom

An uncharged atom characterized by having an equal number of protons and electrons ($19$).

Potassium cation ($K^+$)

An ion that has lost one electron, resulting in a composition of $19$ protons and $18$ electrons.

Superscript

The notation used to indicate the charge of an ion, such as the $+1$ in $K^+$.

Loss of electrons

The specific process that gives an atom an overall positive charge.

Overall charge calculation

The sum of protons and electrons, such as $19\, \text{protons} - 18\, \text{electrons} = +1$ charge for a potassium cation.

Potassium Nucleus

The central part of the potassium atom or ion which contains $19\, \text{protons}$ and $20\, \text{neutrons}$.