Questions
The formula of spine! structure is AB2 O4 . If A2+ and B 3+ just fit into the voids generated by the cubical-closest packing of O2- ions (r = 126 pm), the sizes of A 2+ and B 3+, respectively, are about
The compound BeO has zinc blende unit cell. If r(Be 2+) = 59 pm, r(0 2 -) = 126 pm and M(Be) = 9 g mor ', answer the following three questions
detailed solution
Correct option is B
A2+ occupy tetrahedral voids and B 3+ occupy octahedral voids,
the sizes of A 2+ and B 3+,are 28.4 pm, 52.2 pm respectively
hence rA2+= 0.225 x 126 pm= 28.4 pm and rB3+= 0.414 x 126 pm= 52.2 pm
Talk to our academic expert!
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests