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Selenium may lose 2, 4 or 6 electrons and may gain 2 electrons.
Selenium should gain two electrons and lose six electrons to achieve a noble gas electron configuration.
it would gain electrons because itwants to be like another high powered element
Lost because it is easier for the element to lose 3 electrons and become an octet than it is to gain 5 electrons.
Two electrons.
Selenium may lose 2, 4 or 6 electrons and may gain 2 electrons.
Selenium will gain two electrons and arsenic will gain three electrons
Selenium can gain 1 electron or loss 2, 4, 6 electrons.
The oxidation states of selenium are: 1 to 6 and -1, -2.
Sodium lose electrons becoming a cation.
gain 3
Selenium should gain two electrons and lose six electrons to achieve a noble gas electron configuration.
gain 2 electrons
Uranium loose electrons becoming a cation.
Metals
se and sometimes gain electrons. Atoms with eight valence electrons do not easily lose electrons
A reaction in which the atoms in an element lose electrons and the valence of the element is correspondingly increased.