Group 1 Elements: Alkali Metals
Important Questions on Group 1 Elements: Alkali Metals
What are the common physical and chemical features of alkali metals?
Justify the inclusion of alkaline earth metals and gradation in the following aspects:
i) Electronic configuration
ii) Reducing nature
iii) Oxides and hydroxides.
State as to why, alkali metals are prepared by the electrolytes of their fused chlorides?
What happens when sodium metal is heated in a free supply of air?
What happens when sodium metal is dropped in water?
When an alkali metal dissolves in liquid ammonia the solution can acquire different colours. Explain the reasons for this type of colour change.
Give any two uses of sodium metal.
Give any two uses of lithium metal.
Write a short note on the reactivity of alkali metals towards air.
What makes caesium and potassium useful as electrodes in photoelectric cells?
Alkali metals and their salts impart characteristic colours to an oxidizing flame. Explain the reason.
Why are alkali metals not found in the free state in nature?
Lithium Iodide is the most covalent among the alkali metal halides. Give the reasons.
Lithium reacts with water less vigorously than sodium. Give your reasons.
Which of the alkali metals shows abnormal density? What is the order of the variation of density among the group elements?
Lithium salts are mostly hydrated. Why?
Write completely the electronic configurations of and .
Give reasons for the diagonal relationship observed in the periodic table.
