Sir cwihr; mkut ^ujJslurifiE incms'i^yuftfquil tfaisfcfcf oddatnms sharr^rfEbLCnun ^ dsLum 9.6.3 Electronegativity & Bonding The difference in temperature between the molecules means that solid simple molecular compounds have low melting and boiling points H He -259 -270 '253 -269 gas 2 gas Li Be B C IM O F Ne 3 Na Mg A1 Si P s Cl Al 4 K Ca Sc Ti V Gr m F* Co Ni Cu Zn Ga Ge AS Se Br Kr 5 fib Sj Y Zr m Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te 1 Xe 6 Gs Ba La HI Ta w Re Os Ir Pt Au Hg TI Pb ft Po Al Rn 7 Fr Rd AC Large Radii 3 Ci