Caesium oxide will be...

Caesium oxide will be

Very strongly basic

Acidic

Weakly baisc

Amphoteric

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The correct Answer is:

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Caesium and chloride ions are in contact along the body diagonal in a body-centred cubic lattice. The edge lenth of the unit cell is 350 pm and 'Cs^+' has a radius of 133pm. Hence, the radius of 'Cl^-' ion is approximately

170

133

180

150

If both assertion and reason are true and the reason is the correct explanation of the assertion.

If both assertion and reason are true but reason is not the correct explanation of the assertion

If assertion is true but reason is false.

If assertion is false but reason is true.

anionic polarisability increases, thus stability decreases

anionic size increases, polarisability increases, covalency increases, thus stability increases

anionic size increases, coordination number increases, lattice energy increases, thus stability increases

anionic size decreases, stability increases.