s-Block ElementsHard
Question
A metal M readily forms water soluble sulphate MSO4, water insoluble hydroxide M(OH)2 and oxide MO. The oxide and hydroxide are soluble in NaOH. The M is :
Options
A.Be
B.Mg
C.Ca
D.Sr
Solution
For alkaline earth metals,
(a) solubility of sulphates decreases down the group.
(b) solubility of hydroxide increases down the group.
BeO and Be(OH)2 are amphoteric; so they are soluble in NaOH forming soluble [Be(OH)4]2-.
Hence metal M is Be.
(a) solubility of sulphates decreases down the group.
(b) solubility of hydroxide increases down the group.
BeO and Be(OH)2 are amphoteric; so they are soluble in NaOH forming soluble [Be(OH)4]2-.
Hence metal M is Be.
Create a free account to view solution
View Solution FreeMore s-Block Elements Questions
Chemical A is used for softening of water to remove temporary hardness. A reacts withsodium carbonate to produce cautic ...Which of the following increases in magnitude as the atomic number of alkali metals increases?...In water :...One mole of magnesium nitride on the reaction with an excess of water gives...Amongst the following hydroxides, the one which has the lowest value of Ksp at ordinary temperature is :...