19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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.…
The alkali metals and their salts show characteristics colour to
The low melting point of alkali is due to
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
Group I elements are collectively known as
s-subshell can accommodate maximum number of
Epsom salt is (RPMT 2010)
[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
Hydrogen carbonate of lithium doesn’t exist in solid state due 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
What will be the oxidation state of nitrogen and alkali metal when the nitrogen and alkali metal react with each other?
The colour of alkali metal ions in any sample can be detected by