Which of the following statement (s) is (are) correct ?

Options

A. The co-ordination number of each type of ion in CsCl crystal is 8
B. A metal that crystallises in bcc structure has a co-ordination number of 12
C. A unit cell of an ionic crystal shares some of its ion with other unit cells
D. The length of unit cell in NaCl is 552 pm. `(r_(Na^+)=95 "pm", r_(Cl^-)= 181 "pm")`

Answer

A, C

Explanation

Co-ordination number of each ion in CsCl is 8.
A unit cell of an ionic crystal shares some of its ions with other unit cells.