Question

Which of foll is not a characteristo bos
of a crystalline solid
2. which of foll. is true about the value
of re tractive index of quart glass
Tag
3. Which of roll oxides shows elechical
I properties like metals for all are den
4. The percentage of compty space in a
body cenrred obis arrangement is​

Answer 1

Answer:

3 ans) (d)CrO2, TiO and Re03 are some typical metal oxides which show electrical conductivity similar to metal. While SO2, MgO and SO2 are oxides of metal, semimetal and non-metal which do not show electrical properties.

4 ans)(c) Packing efficiency for bcc arrangement is 68% which represents total filled space in the unit cell. Hence, empty space in a body centered arrangement is 100 – 68 = 32%.