Question

Two metals (A) and (B) belong to the same group of the
periodic table. Metal (A) forms an insoluble oxide but a
soluble sulphate, metal (B) forms a soluble oxide but an
insoluble sulphate. Both metals (A) and (B) form hydroxides
which are soluble in alkalis. (A) and (B) are
(1) Ba and Mg
(2) Na and K
(3) Mg and Ba
(4) K and Rb​

Answer 1

Answer:

Be(x)→BeO(insoluble)/BeSO

4

(soluble)

Ba(y)→BaO(soluble)/BaSO

4

(insoluble)

Be(OH)

2

soluble in NaOH

Ba(OH)

2

insoluble in NaOH

Explanation:

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