Chemistry

We know that the periodic carry over arranged fragments depending on how many a(prenominal) electrons are in its outmost(a) most shell. E.g. Group 1 - has one electron Etc. We know that the metals overhear only a a couple of(prenominal) electrons in their outmost most shell, and are preferably riant to donate them to the non metals, so as to end up with a entire outer shell. The non metals would need to accept well-nigh 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 prognosticate given to the number of electrons that tolerate donated or accepted. If they get donated they swallow a substantiating valence. E.g. Li= +1 Be= +2 B= +3 If electrons are accepted, we say they accommodate a forbid valency. E.g. F= -1 O= -2 N = -3 Something wish well coulomb could be a donor or an acceptor, with a valency of 4. ( inveterately accepts) E.g. C= - or + 4 2h20 2 = sound 2 = 2 subscript +1 = 1 superscript The usual thing that happens is that a positive valency chemical nub ( 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 mite donates an electron, it becomes charged. When an Atom gets charged, it results in a valency, and we now call the speck an Ion. So any chemicals that wed together by donating or accepting electrons are rattling glued together ascribable to positive and negative charges. some(prenominal) new compound conduct this way is called an Ionic Compound.If you destiny to get a full essay, order it on our website: Ordercustompaper.com

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