Question

Calculate the theoretical density for Mgo. Show all your steps and draw the unit cell..

Answer 1

Mgo exist rock- salt structure sexogtoos Ocelotecas o Mga the figure above shows cell anit Mgo The theoretical density, - weight of ion per unit cell unit cell volame Matno hai- number Na vuc of oxygen ion / unit cell Canion) ne number of magnesium ion / unitcen (cation) MaØM & Atomic weight of oxygen & magnesium vac i- volume of anit cell NA :- Avogadoo nambed.

in Cornes o low occupred anit cell. & face centre lon is shared corner face ton in Cachoose by 8 unit by shared a unit cell centre 8+18 ell 6X Ya un total conex total face unitcelle centre non Janitcell lon aces for Mgation, one Mg area occupied and remaing mga lon occupied body centre edge centre at body centre 2+ centre shaded Cach Mg anit cell. 13* 12XL se well body centre total edge ionlanit cell centre con anit cell atomic weight of oxygen, Maž 16 g/mol atomic weight of magnesian, Mc = 24.31g/mol

1pm=1012 ao pedido Avogadoo namber, No=6022x1023 moi lons touch along for rock-salt structure, edge. tå edge length, might ade the atomic radias 3mg = 86pm Standadd value Mg2+ 802- = 126pm a=2 (860m + 126pm) - eaepm =10cn Vuc= a3 = (426x1000 cm3 theoretical density, S = 16(169/mol +24.319/01) (6.023x1023 moi") (*24x16"Com) 3.519/m3