19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Consider the following abbreviations for hydrated What is the correct order of size of these hydrated alkali ions? n n n x Li H O , y Na H O ,z K H O (J & K CET 2006)
Lower melting point chloride is (JCECE 2006)
The correct reason for smaller size of alkaline earth metal than that of alkali metal is that
Which of the following order is correct regarding electropositive character of alkaline earth metals?
Assertion (A): Ba, Ca and Sr produces individual characteristic colour to flame test. Reason (R): this is due to excitation of loosely held electrons from outermost orbit to excited state of orbital.
When sodium nitrate is heated above 800° C then (JCECE 2006)
Main process for the manufacture of sodium carbonate is (MP PMT 2006)
Which compound will show the highest lattice energy? (AIPMT 1993)
Which one of the following properties of alkali metals increases in magnitude as the atomic number reises? (AIPMT 1989)
The colour of alkali metal ions in any sample can be detected by
On moving top to bottom among a group the correct trend of hydration enthalpies for alkali metal ions is
Which of the following has the lowest value of hydration enthalpy?
The hydration enthalpies of alkali metal ions …A… with increase in ionic sizes. Here, A refer to
Alkali metals are never found in free state because
Atomic and ionic radii of alkali metals …X… on moving down the group. Here, X refer to
Monovalent ions are …A…than parent atom. Here, A refers to
Alkali metals have …X… size in a particular period. Here, X refer to
Alkali metals readily …X… electron to give monovalent M+ ion. Here, X refer to
All alkaline metals have …A… valence electrons(s). Here, A refer to
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
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 one of the following has magnesium?