List of top Chemistry Questions on GROUP 1 ELEMENTS asked in JEE Main

The compound which does not exist.

Read the following two statements
Statement I: Ionic radius of Li+ is greater than Mg++
Statement II: Lithium and magnesium can't form superoxide

In which form does \(BeCl_{2}\) exist in the solid state, vapor state and high temperature?

Which of the following statement is incorrect?

Choose the correct order of density of the alkali metals :

Among the statements (A)-(D), the correct ones are : (a) Lithium has the highest hydration enthalpy among the alkali metals. (b) Lithium chloride is insoluble in pyridine. (c) Lithium cannot form ethynide upon its reaction with ethyne. (d) Both lithium and magnesium react slowly with $H_2O$ .

The metal that forms nitride by reacting directly with $N_2$ of air, is :

The correct order of hydration enthalpies of alkali metal ions is -

The amphoteric hydroxide is :

Sodium metal on dissolution in liquid ammonia gives a deep blue solution due to the formation of:

In $KO_2$, the nature of oxygen species and the oxidation state of oxygen atom are, respectively :

The INCORRECT statement is :

Both lithium and magnesium display several similar properties due to the diagonal relationship; however, the one which is incorrect, is :

The main oxides formed on combustion of $Li, Na$ and $K$ in excess of air are, respectively :

Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?

Which of the following statements about $Na_2O_2$ is not correct?

Choose the correct statement(s):
A Beryllium oxide is purely acidic in nature
B Beryllium carbonate is kept in the atmosphere of $CO _2$
C Beryllium sulphate is readily soluble in water
D Beryllium shows anomalous behavior
Choose the correct answer from the options given below:

The correct increasing order of the magnitude of standard enthalpies of formation for group-1 halides is?