Lithium(Li) gains 1 electron to become stable.
sodium must lose 1 electron, helium is a noble gas it is in group 8 check your periodic table, sufide ion must gain 2 electrons
Selenium may lose 2, 4 or 6 electrons and may gain 2 electrons.
It will lose 2 electrons.
45
5s orbital
Lithium loses one electron when it reacts
Se will gain electrons
Lithium is in group 1 of the Periodic How_many_electrons_must_the_lithium_atom_give_up_to_become_stable, so it must lose one electron for it to attain a full outermost energy level and become stable.The charge will then be positive (+).
sodium must lose 1 electron, helium is a noble gas it is in group 8 check your periodic table, sufide ion must gain 2 electrons
it will lose 3 electrons
Selenium may lose 2, 4 or 6 electrons and may gain 2 electrons.
It will lose 2 electrons.
45
Silicon gains 4 electrons.
Phosphorus wants to gain three electrons to have 8 valence electrons.
5s orbital
Aluminum will lose 3 electrons to form Al3+ ion.