requirement

1- metal or nonmetal

2- number of valence

3-number of shells

5-bond type(covalent, ionic, metallic,polar

1-Metal or nonmetal. 2-Number of valence electrons. 3-Numbermber of shells. 4-Bond 2 points type (covalent, ionic, metallic, polar). He C No el 24 > Na Al 43 5 CI Mo Ar 50 Ca Sc TI Cr 66 Mn 25 Fo BE . BI Au .. w Pb Pt Cs Rn Po At Ta Ir 17 HE 72 Ba 36 Ro 75 270 Bh TA Os 76 26 Hs 100 211 89-103 Uue Uut Rg Cn Uus FI 281 Ds 10 LY RI 104 Fr Ra Db 105 Uup 13 So Mt 109 OP