19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Atomic and ionic radii of alkali metals …X… on moving down the group. Here, X refer to
Alkali metals can be detected by their respective …A… Here, A refer to
Which of the following element(s) is used as useful electrode(s) in photoelectric cells?
A 70 Kg man contain about …X… of Na and …Y… of K. here, X and Y refer to
Alkaline earth metals are …X… than that of alkali metals. Here, X refer to
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
…X and …Y…Shown diagonal similarity. Here, X and Y refer to
Alkali metals readily …X… electron to give monovalent M+ ion. Here, X refer to
Alkali metals have …X… size in a particular period. Here, X refer to
s-subshell can accommodate maximum number of
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
Among the alkali metals, cesium is the most reactive because (RPMT 2010)
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?
Alkali metals are generally silvery white but beryllium and magnesium appears to be
Among the alkali metals …A and …B… are relatively more abundant in nature. Here A and B refer to
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…
Washing Soda is (MP PMT 2010)
Which of the following does not belong to alkaline earth metal?
Monovalent ions are …A…than parent atom. Here, A refers to
The ionic mobility of alkali metal ions is aqueous solution is maximum for (RPMT 2010)