In chemistry, metals are the elements that tend to lose electrons when they react to form compounds; Non-metals tend to gain electrons when they form compounds. When metals and non-metals react and exchange electrons with one another they form an ionic bond.
Two electrons.
to become stable
to gain or lose electrons to become stable
bcc it's the same
Atoms gain, lose or share electrons and try to attain noble gas configuration.
Metals will LOSE electrons to become stable.
It would have to lose two electrons.
lose 2
Two electrons.
cations
to become stable
Tantalum needs to lose 2 electrons to become stable. Tantalum has 73 protons, so losing 2 electrons will give it a full outer shell of 71 electrons, which is the most stable configuration for the element.
It'll have to lose two to have a stable octet.
Atoms lose or gain electrons to become ions in order to achieve a stable electron configuration, typically through having a full outer shell. Noble gas atoms already have a full outer shell, making them stable and unlikely to gain or lose electrons to become ions. This is known as the octet rule.
Calcium (Ca) typically loses 2 electrons to become more stable when bonding, as it has 2 valence electrons in its outer shell. By losing these electrons, calcium achieves a full octet, making it more stable.
2
Octet Rule: In order for atoms to become more stable, they will take electrons, lose electrons, or share electrons so that their outer shell/level will contain eight electrons and be complete.