gain 3
Selenium typically gains two electrons to achieve a stable electron configuration, forming the Se2- ion. Arsenic typically loses three electrons to achieve a Noble Gas electron configuration and forms the As3+ ion.
Selenium can gain 1 electron or loss 2, 4, 6 electrons.
An atom of selenium will gain two electrons to achieve an octet because it has six valence electrons in its outer shell. By gaining these two electrons, selenium will have a total of eight electrons in its outer shell, fulfilling the octet rule.
Nonmetals tend to gain electrons when they react, rather than lose them. This is because they have fewer electrons in their outer shell and they have a higher tendency to gain electrons to achieve a stable electron configuration.
Sulfur typically gains electrons to form a stable electron configuration. It can gain up to two electrons to achieve a full valence shell of eight electrons.
Selenium may lose 2, 4 or 6 electrons and may gain 2 electrons.
Selenium typically gains two electrons to achieve a stable electron configuration, forming the Se2- ion. Arsenic typically loses three electrons to achieve a Noble Gas electron configuration and forms the As3+ ion.
Selenium can gain 1 electron or loss 2, 4, 6 electrons.
The oxidation states of selenium are: 1 to 6 and -1, -2.
Silicon (Si) can gain or lose 4 electrons. It can either gain 4 electrons to have a stable octet configuration or lose 4 electrons to achieve a stable configuration.
An atom of selenium will gain two electrons to achieve an octet because it has six valence electrons in its outer shell. By gaining these two electrons, selenium will have a total of eight electrons in its outer shell, fulfilling the octet rule.
Metals will LOSE electrons to become stable.
lose 2
Selenium typically loses 2 electrons to achieve a stable electron configuration. This results in the formation of a 2+ ion for selenium.
Compounds will gain or lose electrons in order to reach a more stable state, ideally a full valence shell.
to become stable
A stable electron configuration.