An ions is formed when an atom gains or loses electrons.
The ion formed by chlorine is the "chloride" ion
Hydroxonium H3O+ ion is formed.
+1 Na+ ion is formed
Fluoride Ion
The ion formed by a calcium atom is called a calcium ion, which has a 2+ charge.
A hydrogen ion (H+)
-2 is the most common charge (sulphide ion).
This ion is hydronium: (H3O)+.
The ion formed by a fluorine atom is called a fluoride ion, which has a charge of -1. It is formed when a fluorine atom gains an electron to achieve a full outer electron shell.
The most common ion formed by sulfur is the sulfide ion (S2-).
A positive ion is formed when atoms lose electrons. When a cell gains an electron it becomes negative
It forms the Na+ ion.