19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following metal has high value of polarization?
Lithium halides are somewhat …A… It is because …B… value of polarization capability of lithium ion. Here, A and B refer to
The nature of bonding in hydride of alkali metal is
Alkali metal reacts with water vigorously to form hydroxides and dihydrogen. Which of the following alkali metals reacts with water least vigorously?
The oxidation state of K in KO2 is …A… and the bonding type is …B… Here, A and B refer to
Alkali metals are kept in kerosene oil. Which of the following reason (s) is/are correct regarding this statements?
Which of the following elements(s) form stable superoxide?
Choose the correct statements(s) among the following. I. Alkali metal is highly reactive. II. Alkali metal has lowest ionization enthalpy among their respective period. III. Ionization energy of alkali metals incre…
Which of the following element(s) is used as useful electrode(s) in photoelectric cells?
Alkali metals can be detected by their respective …A… Here, A refer to
Choose the correct option from the codes given below regarding elements and their characteristics colour given in Column I and II of the following table. Column I Column II A. Li 1. Crimson red B. Na 2. Yellow C. K 3.…
Alkali metals show regular trend in their physical and chemical properties with the
The diagonal relationship of elements arises due to the similarity in
Which of the following shows diagonal relationship?
…X and …Y…Shown diagonal similarity. Here, X and Y refer to
Which of the following does not belong to alkaline earth metal?
Among the alkali metals …A and …B… are relatively more abundant in nature. Here A and B refer 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
Group I elements are collectively known as
s-subshell can accommodate maximum number of
Along the group in alkali metals the density
Which of the following choice(s) represents(s) physical properties of alkali metals?
Which of the following metal salt is mostly hydrated?
…A… has maximum degree of hydration. Here, A refers to
The correct decreasing order of ionization enthalpy in alkali metals is