ThePrismSolutions

ThePrismSolutions

DAILY PRACTICE PAPER(18Th June 2018)

(1) TiCl has structure similar to CsCl, the co-ordination number of Ti+

(a) 4     (b) 6
(c) 8     (d) 10

(2) For tetrahedral co-ordination the radius ratio(r+/r-)

(a) 0.414-0.732    (b) >0.732
(c) 0.156-0.225    (d) 0.225-0.414

(3) The ratio of cation to anion in a closed pack tetrahedral is-

(a) 0.414   (b) 0.225
(c) 0.02    (d) None of these

(4) The radius of the Na+is 95 pm and the Cl- ion is 181 pm.Predict the co-ordination number of Na+

(a) 4    (b) 6
(c) 8    (d) Unpredictable

(5) The ionic radii of Rb+ and I- are 1.46 and 2.16 Å.The most probable type of structure exhibited by it is-

(a) CsCl type     (b) NaCl type
(c) Zns type      (d) CaF2 type



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