because is always going to be a -
The ion formed by a calcium atom is called a calcium ion, which has a 2+ charge.
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 ion formed by an arsenic atom is As3- (arsenide ion) when it gains three electrons or As3+ (arsenite ion) when it loses three electrons.
An ions is formed when an atom gains or loses electrons.
The ion Se4+ is common.
An ions is formed when an atom gains or loses electrons.
An ions is formed when an atom gains or loses electrons.
A one-atom ion is called a monatomic ion. It is formed when an atom gains or loses electrons, resulting in a net positive or negative charge.
The given electron configuration corresponds to the ion with a charge of -2, which is the oxide ion (O^2-). This ion is formed by the element oxygen when it gains two electrons to achieve a stable electronic configuration.
ion
Anion
Eletron