2
When metals react, they lose electrons to become stable and sometimes form a compound
Two electrons are donated by Barium to an oxidant (nonmetal, eg. O2) by which barium gets oxidised.Ba --> Ba2+ + 2e-This is because Ba is in group 2 of the periodic system, belonging to the 'earth alkali' metals and so it has 2 electrons (2e-) in its valency (or outer) shell (2,8,18,18,8,2). Hence Ba2+ configuration is (2,8,18,18,8,-), with an empty (-) 6th shell (the 'P' shell) like Xenon.
Choices: a) eject, retain B) lose, gain c) retain,gain d) gain, lose e) lose, retain
Yes! Barium is a group 2 metal and so loses two electrons. Oxygen is a group 16 non metal and will readily pick up two electrons. So, they form BaO.
Carbon needs 4 valence electrons to satisfy it's outer energy level.
Two electrons.
Sulfur gains 2 electrons to become stable.
Metals will LOSE electrons to become stable.
lose 2
Metals lose electrons to become positively charged but stable. The electrons they lose are accepted by the non-metal to become negatively charged but stable.
cations
to become stable
It'll have to lose two to have a stable octet.
it lose 2 electron
2
It needs to lose 3.
to gain or lose electrons to become stable