Group　Electronegativity　Containing　Phosphorus　Element　YANG　Zhong2zhi　YUZhi2hui　(Department　LiaoningNormal　University　Dalian116029　China)Abstract　densityfunctional　theory　electronegativityequalization　principle　modi2fied　electronegativity　equalization　model　(MEEM)　separatedprogram　throughlinear　regression　least2squaresoprimization　valencestate　parameters　modelwere　determined.　parame2ters　groupelectronegativity　chargedistribution　somegroups　containing　phosphorus　element　totalen2　ergies　groupswere　calculated.　Key　words　:modified　electronegativity　equalization　method　(MEEM)　;group　electronegativity　;charge　distribution