support staff meaning, support staff definition | English Cobuild dictionary. support. 1 verb If you support someone or their ideas or aims, you agree with them, and perhaps help them because you want them to succeed. (=back) (Antonym: oppose) The vice president insisted that he supported the hard-working people of New York... V n.
The valence shell is the outer shell of the atom. Some materials have a free electron in their valence shell and this electron can easily move from atom to atom. The free electrons are responsible for electrical current.
Number of electrons present in the valence shell of an atom or number of protons present in the nucleus of an atom is known as atomic number of an element. Aluminium is placed in 3rd A group of the periodic table. Thus group number indicates number of electrons present in the valence shell. Secondly,atomic number of aluminium is 13,hence itâs electronic configuration can be written as ,2,8,3. Aluminium is metal qhich shows +3 oxidation state in itâs compounds.