EVALUATION . For alkali metals, which one of the following trends is incorrect ? a) Hydration energy : Li > Na > K > Rb b) Ionisation energy : Li > Na > K > Rb c) Density : Li < Na < K < Rb d) Atomic size : Li < Na < K < Rb . Which of the following statements is incorrect ?
a) Li + has minimum degree of hydration among alkali metal cations. b) The oxidation state of K in KO is + c) Sodium is used to make Na / Pb alloy d) MgSO is readily soluble in water . Which of the following compounds will not evolve H gas on reaction with alkali metals ? a) ethanoic acid b) ethanol c) phenol d) none of these .
Which of the following has the highest tendency to give the reaction M + (g) Aqueous Medium M + (aq) a) Na b) Li c) Rb d) K . sodium is stored in a) alcohol b) water c) kerosene d) none of these . RbO is a) superoxide and paramagnetic b) peroxide and diamagnetic c) superoxide and diamagnetic d) peroxide and paramagnetic 11th Std Chemistry 11th Std Chemistry - - - - . Find the wrong statement a) sodium metal is used in organic qualitative analysis b) sodium carbonate is soluble in water and it is used in inorganic qualitative analysis c) potassium carbonate can be prepared by solvay process d) potassium bicarbonate is acidic salt .
Lithium shows diagonal relationship with a) sodium b) magnesium c) calcium d) aluminium . Incase of alkali metal halides, the ionic character increases in the order a) MF < MCl < MBr < MI b) MI < MBr < MCl < MF c) MI < MBr < MF < MCl d) none of these . In which process, fused sodium hydroxide is electrolysed for extraction of sodium ? a) Castner's process b) Cyanide process c) Down process d) All of these .
The product obtained as a result of a