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all right hereamp;#39;s our video how negative ions are written and weamp;#39;ll also weamp;#39;ll do positive ions also so a negative ion just in the name letamp;#39;s get our pen going letamp;#39;s use red so a negative ion will be an anion so theyamp;#39;re negative whereas a positive will be a cation so just think cats are positive think that maybe thatamp;#39;ll help you or with other what other mnemonic device you want to use so thereamp;#39;s these endings that youamp;#39;ll see and youamp;#39;ll see the word either Iamp;#39;d right or you might see the word height again the endings of these words or eight and if you see those then you know youamp;#39;re dealing with a negative ion for example on the periodic table youamp;#39;ll see fluorine letamp;#39;s say and fluorine is a halogen itamp;#39;s the most reactive element on the periodic table and if fluorine becomes an ion then it becomes fluoride so you see that Iamp;#39;d right there that Iamp;#39;d all right