F gains 1 e - and Ogains 2 e -'s, and O gain e -'s to attain theconfiguration of Ne thus, the halogens tend to -1 charges and theoxygen family tends to a -2 charge. On the other side of the periodic table elements gain electrons toresemble the next higher noble gas. Thus, the group 2 metals tend tohave a +2 charge. The alkali earth metals (group 2), such as, Mg or Sr lose two e-'sto attain the configuration of Ne. Looking at the table, one can see that the positive. Since K loses one electron (1 negative charge)it is no longer neutral it now has a +1 charge. An elements placement on the periodic table indicates whether its chemical charge is negative or positive. Kloses an electron so that it will have the same electronconfiguration as Ne. Atoms are neutral, so Ill assume you mean the charges formed when atoms lose or gain electrons to form ions. The alkali metals will lose anelectron to resemble the next lowest noble gas thus, all the alkalimetals form +1 ions. Two (or more elements) can share electrons so that each attains the electron configuration of the nearest noble gas.An element can attract additional electrons to achieve the electron configuration of the next highest noble gas.An element can give up electrons to achieve the electron configuration of the next lowest noble gas. The useful thing is that different elements have been grouped together on the periodic table so that its easy to see which ones share something in common.On the Periodic Table metals (found on the left of the table) will be posi. When ions form, atoms gain or lose electrons until their. To find the ionic charge of an element youll need to consult your Periodic Table. Achieving a Noble Gas Electron Configurationįor reasons we will discuss later, elements react until theelement achieves an electron configuration of a noble gas.Įlements can achieve a noble gas electron configuration threeways. Since it has 1 more electron than protons, chlorine has a charge of 1, making it a negative ion.
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