19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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?
On moving top to bottom among a group the correct trend of hydration enthalpies for alkali metal ions is
Monovalent ions are …A…than parent atom. Here, A refers to
Atomic and ionic radii of alkali metals …X… on moving down the group. Here, X refer to
The ionization enthalpies of alkali metals are considerably
The correct decreasing order of ionization enthalpy in alkali metals is
…A… has maximum degree of hydration. Here, A refers to
Hydrogen carbonate of lithium doesn’t exist in solid state due to
‘A’ is an important constituent of cement which is responsible for setting of cement. What is the number of water of crystallization present in ‘A’?
Chemical clinker can be obtained by the reaction of
A chemical (A) is used for the preparation of washing soda to recover ammonia. When CO2 is bubbled through an aqueous solution of A, the solution turns milky. It is used white washing due to disinfectant nature. What …
Property of the alkaline earth metals that increases with their atomic number
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.
Which of the following order is correct regarding electropositive character of alkaline earth metals?
The correct reason for smaller size of alkaline earth metal than that of alkali metal is that
Along the group atomic and ionic radii are …X… and along the period atomic and ionic radii are …Y… Here, X and Y refer to
[X] and [Y] are two nitrates of alkali metals [X] and [Y] on decomposition produces oxides and nitrites respectively. Here, [X] and [Y] refer to
Which of the following metal do not form salt with ethyne?
Why lithium compound are soluble in organic solvent?
On moving top to bottom the negative value of formation …A… for fluoride of alkali metals. Here, A refer to
Which of he following is/are less soluble in water? LiF, CsI, NaCl, KCl
The most electropositive alkali metal is
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 …
In concentrated solution, the colour of alkali metals in liquid ammonia is