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Density formula
d = m/v
density directly proportional to mass
trend of atomic volume and atomic mass across period
volume = left to right > decrease
mass = left to right > increase
Since mass increase across period
density does too
order of density in group
3d < 4d<< 5d
Maximum density
Ir slightly greater, almost equal to Os
Cu>Zn
Zn has lower density because of its large atomic volume
Ionization energy
Higher IE than group 1 and 2 due to high Zeff
IE1 of Zn,Cd,Hg
very hugh cuz fully filled