One of your friends said that radius ratio of NaCl is 0.52 .Can you predict geometery of voids and cordination number of NaCl?

One of your friends said that radius ratio of NaCl is 0.52 :What is meant by radius ratio?

AB is an ionic solid. If the ratio of ionic radius of A^(+) and B^(-) is 0.52 what is the co-ordination number of B^(-) ?

One of your friends defines molality as follows. “It is the number of gram moles of the solute dissolved per litre of solution: Can you help him to define molality?

After observing the model of the lumen of human intestine your friend said that "the villi projected into the lumen actually block the movement of food through the intestine, if the villi are absent food can easily pass through the intestine." How will you respond to this comment?

One of your friends brought Spirulina protein from Japan as SCP without knowing its importance. Can you explain the significance of it?

a. NaCl does not exhibit Frenkel. Defect. Do you agree? Justify. b: Assume that a fresh piece of KCl crystal is heated in an atmosphere of potassium " vapours. Is there any. C0lour change? Substantiate your answer.

A 4.0 molar aqueous solution of NaCl is prepared and 500mL of this solution is electrolysed. This leads to the evolution of chlorine gas at one of the electrodes (Atomic mass: Na= 23: Hg=200, 1 faraday= 96500 coulomb) The total number of moles of chlorine gas evolved is