There is no electron exchange when no reaction takes place (this is what 'inert' means)
Group 2A elements tend to GAIN electrons!!
Nonmetals gain electrons in chemical reactions.
Metals lose electrons, nonmetals gain electrons.
When these elements have five electrons on the outermost shell of electrons.
It is going to lose electrons
As a general rule, the noble gases do not lose or gain valence electrons because in most reactions they are considered inert.
The Group 0 elements are called the noble gases. These are the six gases that are almost completely inert. Since they do not lose or gain any electrons, their valence is 0.
Group 2A elements tend to GAIN electrons!!
Nonmetals gain electrons in chemical reactions.
Non-metals gain electrons.
Metals lose electrons, nonmetals gain electrons.
When these elements have five electrons on the outermost shell of electrons.
Actually, non metals always gain electrons
ions
Atom loose or gain electron to make its octet complete. It is done to achieve inert state.
Noble gases have completely filled orbitals / energy levels. They generally have 8 valence electrons (helium has only 2 valence electrons) and have stable electronic configuration. Hence they are chemically inert,generally do not form compounds under normal conditions and are known as inert gases.
Tetravalent means having 4 valence electrons. The elements in the 14th group are tetravalent. They do not lose or gain electrons. they gain electrons.