Want this question answered?
It must gain two electrons.
It is going to lose electrons
Bromine must gain one electron
It loses 2 electrons to obtain the argon configuration of 8 valence electrons.
Two electrons.
Magnesium has a charge of 2+ and oxygen 2- Magnesium will lose the two "extra electrons" in its valence shell when creating an ionic bond with oxygen. The oxygen will gain these two electrons.
Magnesium is in the second group (column) of the periodic table, so it has two valence electrons or electrons in its outer shell. so in order for it to fulfill the octet rule (get eight electrons in its valence shell most of the time), then it would rather lose two electrons and have a full valence shell than gain six electrons.
It must gain two electrons.
Phosphorus wants to gain three electrons to have 8 valence electrons.
It is going to lose electrons
P has 5 valence electrons so it can gain 3 electrons or lose 5 electrons to have a full valence shell.
Phosphorus wants to gain three electrons to have 8 valence electrons.
Atoms with eight valence electrons usually do not gain or lose electrons. Atoms with one, two, or three valence electrons will lose electrons.
Bromine must gain one electron
It loses 2 electrons to obtain the argon configuration of 8 valence electrons.
Two electrons.
This is a metal so it will lose its valence electrons.