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Explain Electronic Nature of Metals and Non-metals. |
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Answer» Electronic Nature of Metals and Non-metals The atoms of all elements, except noble gases, have an incomplete outermost shell. . Noble gases have their outermost shell complete and hence they are not reactive or "inert". Most elements are reactive and try to achieve the stability of the noble or inert gases by electron transfer or by electron sharing. Elements that can donate electrons are called metals. They form positive ions by losing electrons. The elements that accept electrons are called non-metals. They form negative ions by gaining electrons. Metals have 1 to 3 electrons in the outermost shell of their atom and non-metals have 4 to 8 electrons in the outermost shell. There are two exceptions to this rule: Hydrogen and helium. Hydrogen is a non-metal having 1 electron in the valence shell and helium too is an inert gas having 2 electrons in the valence shell. |
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