What is the present by mass of titanium in rutile, a mineral that contains Ti and oxygen if structure can be described as a closest packed array to oxide ions with titanium ions in one-half of the octahedral holes ? What is the oxidation number of Ti ? (Atomic mass of Ti=48)

What is the present by mass of titanium in rutile, a mineral that cont

1.	What is the present by mass of titanium in rutile, a mineral that contains Ti and oxygen if structure can be described as a closest packed array to oxide ions with titanium ions in one-half of the octahedral holes ? What is the oxidation number of Ti ? (Atomic mass of Ti=48)
Answer» Solution :If no. of oxide ions =n, then octahedral HOLES =n and hence `O^(2-)` ions `=n/2` `therefore TI:O =n/2 :n=1/2:1=1:2` Hence, FORMULA of the oxide is `TiO_2`. Molar mass of `TiO_2`=48+32 =`80 g mol^(-1)` `therefore` % of Ti=`48/80xx100`=60% . Oxidation state of Ti in `TiO_2`=+4