Boron looses three electrons when reacting to nonmetals like oxygen: B --> B3+ + 3e- .
Another, less clear, behaviour is shown when boranes, hydrides etc. are formed.
lose three electrons
In phosphene it gain 4 electrons. Phosphate lose 4 electrons
silicon prefers to share electrons forming covalent bonds
because nonmetals gain electrons in ionic bonds and metals lose electrons in ionic bonds(oxidize).
As fluorine is a halogen (the group in which the elements are more reactive as they are one electron lesser than that of the octet configuration)and hence it can only gain electrons.
lose three electrons
L3e-
In phosphene it gain 4 electrons. Phosphate lose 4 electrons
Some atoms lose electrons, some gain electrons, and some share electrons depending on what elements are involved and what compound is forming.
Strontium, as a metal, lose electrons forming divalent cations.
Selenium may lose 2, 4 or 6 electrons and may gain 2 electrons.
Selenium will gain two electrons and arsenic will gain three electrons
silicon prefers to share electrons forming covalent bonds
It will lose 2 to form Sr2+
All atoms become positive ions when they lose electrons, and negative when they gain electrons.
Beryllium would tend to lose its two electrons when forming a bond because it is easier to lose its two valence electrons rather than gain an additional five in order to obtain a full outer shell.
OVER 9000