19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following choice(s) represents(s) physical properties of alkali metals?
Which of the following element(s) is used as useful electrode(s) in photoelectric cells?
Lithium and magnesium oxides and hydroxides are …X… soluble in water. Here, X refers to
Which of the following shows diagonal relationship?
Alkali metals have …X… size in a particular period. Here, X refer to
…X and …Y…Shown diagonal similarity. Here, X and Y refer to
Monovalent ions are …A…than parent atom. Here, A refers to
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
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?
Atomic and ionic radii of alkali metals …X… on moving down the group. Here, X refer to
All alkaline metals have …A… valence electrons(s). Here, A refer to
s-subshell can accommodate maximum number of
Group I elements are collectively known as
The ionization enthalpies of alkali metals are considerably
Sodium …X… is widely used as a/an …Y…. Here, X and Y refer to
For alkali metals, which one of the following trends is incorrect? (KCET 2010)
The hydration enthalpies of alkali metal ions …A… with increase in ionic sizes. Here, A refer to
Which of the following has the lowest value of hydration enthalpy?
The oxidant which cannot act as a reducing agent is
The oxidation number S in Na₂S₄O₆ is
The oxidation number of P in Mg₂P₂O₇ is
The oxidation number of Pr in Pr₆O₁₁ is
Oxidation number of Cl in CaOCl₂ (bleaching powder) is
The oxidation number of carbon in CH₂Cl₂ is