19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
What will be the oxidation state of nitrogen and alkali metal when the nitrogen and alkali metal react with each other?
Which of the following statement(s) is/are incorrect regarding property of alkali metals? I. Alkali metal on reaction with water produces a gas as a byproduct which burns with poping sound. II. Alkali metals dissolve …
The most correct reason for colour of alkali metal ions is
Which of the following has the lowest value of hydration enthalpy?
On moving top to bottom among a group the correct trend of hydration enthalpies for alkali metal ions is
The colour of alkali metal ions in any sample can be detected by
The most electropositive alkali metal is
Which of the following ion(s) is/are responsible for biological functions such as maintenance of ion balance and nerve impulse conduction?
Which of the following is/are correct pair(s) regarding diagonally related elements?
Alkali metals are never found in free state because
The hydration enthalpies of alkali metal ions …A… with increase in ionic sizes. Here, A refer to
Which of the following statements(s) is/are incorrect regarding the s-block elements? I. Francium is highly radioactive element. II. Oxides and hydroxides of alkali metals and alkaline earth metals are not alkaline i…
Which of he following is/are less soluble in water? LiF, CsI, NaCl, KCl
The diagonal relationship of elements arises due to the similarity in
Alkali metals show regular trend in their physical and chemical properties with the
Which of the following shows diagonal relationship?
All alkaline metals have …A… valence electrons(s). Here, A refer to
Among the alkali metals …A and …B… are relatively more abundant in nature. Here A and B refer to
Which of the following does not belong to alkaline earth metal?
Alkali metals readily …X… electron to give monovalent M+ ion. Here, X refer to
…X and …Y…Shown diagonal similarity. Here, X and Y refer to
Match List-I with List-II. List-I List-II
Group I elements are collectively known as
Group II elements with exceptions of beryllium are known as alkaline earth metals. These are so called because their …A…and …B… are alkaline in nature. Here, A and B refer to
Correct order of stability of group IIA metal carbonates is (OJEE 2009)