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  4. The radius ratio of KF is 0.98. The structure of KF is of the type

Q. The radius ratio of is . The structure of is of the type

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Solution:

As lies in the range . Hence the coordination number is and crystal is of type.

Questions from NTA Abhyas 2022

1. An alkene on ozonolysis gives a mixture of two carbonyl compounds. Mixture on Clemmensen reduction gives just one alkane . is the lowest alkane which in pure form can not be prepared by standard Wurtz method. is

2. A cation is in the centre touches three anions. Assume that the anions also touch each other. The limiting radius ratio, is

3. Blue colour of alkali and alkaline earth metals in liquid is due to

4. Which of the following oxides is strongly basic?

5. In a box hydroiodic acid is taken. After equilibrium the concentration of is found to be . The concentration of at equilibrium in , is

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[Given that molecular mass of NaOH = 40 g mol]

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