Chemistry

We know that the periodic slacken arranged fragments depending on how many an(prenominal) electrons are in its out(a) most shell. E.g. Group 1 - has one electron Etc. We know that the metals stool only a a couple of(prenominal) electrons in their outmost most shell, and are sort of riant to donate them to the non metals, so as to end up with a entire outer(a) shell. The non metals would need to accept approximately spare electrons from the metals to fill their outer shell. This means we could divide the metals and the non metals into electron donors and electron acceptors. Valency is the differentiate given to the number of electrons that drum donated or accepted. If they get donated they nonplus a affirmative valence. E.g. Li= +1 Be= +2 B= +3 If electrons are accepted, we say they obligate a nix valency. E.g. F= -1 O= -2 N = -3 Something homogeneous coulomb could be a donor or an acceptor, with a valency of 4. ( frequently accepts) E.g. C= - or + 4 2h20 2 = in full 2 = 2 subscript +1 = 1 superscript The usual thing that happens is that a positive valency chemical inwardness ( metals ) would donate their electrons to a negative valency chemical (non-metal) E.g.

Li+1 ( lithium)+ F-1 (fluorine)= LiF (Lithium Fluoride) Example. 2Li+1+O-2 = Li2O Be + F = beryllium flouride (BeF2 Be + O = Beryllium Oxide Li + Cl = Lithium Oxide Be + Cl = Beryllium chloride (BeCl2) Na + Cl = particleic number 11 chloride NaCl Na + 0 = 2na+cl = Na2O = 2sodium 1oxygen When a metal jot donates an electron, it becomes charged. When an Atom gets charged, it results in a valency, and we now call the part an Ion. So any chemicals that cling together by donating or accepting electrons are real glued together ascribable to positive and negative charges. some(prenominal) new compound aim this way is called an Ionic Compound.If you compliments to get a full essay, order it on our website: Orderessay

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