Back

Ferrous oxide has a cubic structure and each edge of the unit cell is

50 Å  . Assuming density of the oxide as 4.0g – cm -3     then the number of  Fe2+   and  O2-  ions present in each unit cell will be

a. Four Fe2+ and four O2-

b. Two  Fe2+  and four O2-

c.  Four Fe2+    and  O2-

d.Three Fe2+   and three  O2-

Ans. a

 

(10)

5/5 - (1 vote)

Related Posts:

Powered by Contextual Related Posts

jyoti

You may also like

23. 200 mL of an aqueous solutions of a protein contains is 1.26 g. The Osmotic Pressure of this solution at 300 K is found to be
07/06/2022

2.57 x 10 -3  bar. The molar mass of protein will be a. 31011 g mol -1 b. 61038 g mol -1 c. 51022 g mol -1 d. 122044  g mol -1 Ans. b (9)

25. What is the osmotic pressure of a 0.0020 mol
07/06/2022

dm-3   sucrose solution at 20 ° C (molar gas constant, R = 8.314 JK -1 mol -1  ; 1 dm-3  = 0.001 m3 ) a. 4870 Pa b. 4.87 Pa c. 0.00487 Pa d. 0.33 Pa Ans. a (17)

error: Content is protected !!