The ion Se4+ is common.
Se2-Se 2-
A sulfur atom is larger than an oxygen atom.
The oxidation states of selenium are: -2, +2, +4, +6.
Calcium selenide, CaSe, is formed.
fluoride ion
a bromide ion is formed, the ion formed has a -1 charge, and the ion formed is an anion
An ions is formed when an atom gains or loses electrons.
caltribadium ion
An ions is formed when an atom gains or loses electrons.
No. Selenium generally forms selenide (Se2-) ion
As2-
An ions is formed when an atom gains or loses electrons.