Cation - Labster Theory - hth华体会最新网站

A positively chargedionis called cation. The positive charge is a result of losing electrons. See the example below for potassium.

On the left, a potassium atom labelled K atom. The nucleus contains 19 protons and 20 neutrons, and the atom contains 19 electrons. On the right, a potassium cation labelled K superscript positive ion. The nucleus contains 19 protons and 20 neutrons, and the atom contains 18 electrons. A box on right says 19 protons minus 18 electrons equals positive 1 overall charge.

Figure 1:A potassium (K) atom has an equal number of protons and electrons (19) and is hence uncharged. In contrast, a potassium cation (K⁺)已经失去了一个电子。这导致更多的保护ons than electrons and gives K an overall positive charge of +1. The charge is indicated by a superscript.