CHEM 1111 Chapter Notes - Chapter 5: Calcium Fluoride, Formula Unit, Nonmetal
Document Summary
Gilbert lewis: american chemist, suggested that atoms combine to achieve a more stable electron configuration. We have already seen that common monoatomic ions result when atoms of main group elements either gain or lose enough electrons to become isoelectronic with noble gases: achieving maximum stability. When atoms interact to form compounds: it is their valence electrons that actually interact. Lewis dot symbol: consists of the element"s symbol surrounded by dots, where each dot represents a valence electron. The number of dots in the lewis dot symbol is the same as the group number of the element: when writing lewis dot symbols. We do not pair dots until absolutely necessary: the number of unpaired dots is the number of bonds the atom can form, can also represent atomic ions. Add for anions or subs tact for cations the appropriate number of dots from the lewis dot symbol of the atom and include the ion"s charge.
