Sodium react with water more vigorously than lithium because ___________

Which of the following dissolves in water with a hissing sound?

Several blocks of magnesium are fixed to the bottom of a ship to ___________

Electronic configuration of s-block elements is _______________

Which of the following halides has the highest melting point?

Identify the most stable hydride among the following ____________

________ occurs in large amounts in sea water

Which among the following alkali metals exhibit the most metallic character?

Why Cs and K are used as electrodes in photoelectric cells ___________

Which of the following metals is most commonly used in photochemical cells?

________ is responsible for the transmission of nerve signals.

Which of the following is used in photoelectric cells?

The reducing power of a metal depends on various factors. Suggest the factor. which makes Li, the strongest reducing agent in aqueous solution __________

The hydration enthalpies of alkali metal ions decreases in ______ order.

Electronic configuration of 1s block of elements is ______

The compound (X) on heating gives a colourless gas and a residue that is dissolved in water to obtain (B). Excess of CO₂ is bubbled through aqueous solution of B, C is formed. Solid (C) on heating gives back X.(B) is ____________

Which is the correct sequence of solubility of  carbonates of alkaline earth metals ?

In which process, fused sodium hydroxide is electrolysed for extraction of sodium ?

Which of the following compounds will not evolve H₂ gas on reaction with alkali metals ?

Assertion : Generally alkali and alkaline earth metals form superoxides
Reason : There is a single bond between O and O in superoxides
a) both assertion and reason are true and reason is the correct explanation of assertion
b) both assertion and reason are true but reason is not the correct explanation of assertion
c) assertion is true but reason is false
d) both assertion and reason are false