Chemistry

We know that the periodic table arranged fragments depending on how some(prenominal) electrons are in its outer most(prenominal) shell. E.g. Group 1 - has one electron Etc. We know that the metals have save a a couple of(prenominal) electrons in their outer most shell, and are quite riant to give them to the non metals, so as to end up with a entire outer shell. The non metals would desire to accept some spare electrons from the metals to fill their outer shell. This centre we could divide the metals and the non metals into electron donors and electron acceptors. Valency is the name give to the number of electrons that get donated or accepted. If they get donated they have a affirmatory valence. E.g. Li= +1 Be= +2 B= +3 If electrons are accepted, we say they have a cast out valency. E.g. F= -1 O= -2 N = -3 Some occasion like coulomb could be a donor or an acceptor, with a valency of 4. (usually accepts) E.g. C= - or + 4 2h20 2 = full 2 = 2 subscript +1 = 1 superscript The usual thing that happens is that a positive valency chemical substance ( 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 atom donates an electron, it becomes charged. When an jot gets charged, it results in a valen cy, and we now call the atom an Ion. So an! y chemicals that bond together by donating or judge electrons are really glued together referable to positive and negative charges. Any new compound organize this personal manner is called an Ionic Compound.If you want to get a full essay, prescribe it on our website: OrderCustomPaper.com

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