The ion Se4+ is common.
The oxidation states of selenium are: -2, +2, +4, +6.
A sulfur atom is larger than an oxygen atom.
Selenium typically forms an ion with a charge of -2 when it gains two electrons to achieve a stable electron configuration. This forms the selenide ion (Se2-).
Calcium selenide, CaSe, is formed.
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 charge of a boron atom can vary depending on the specific ion formed. Boron typically forms ions with a charge of +3 by losing three electrons to achieve a stable electron configuration.
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.