S Block Elements Question 137
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 m alkalis, (A) and (B) are
Options:
A) $ Ba $ and $ Mg $
B) $ Na $ and $ K $
C) $ Mg $ and $ Ba $
D) $ K $ and $ Rb $
Show Answer
Answer:
Correct Answer: C
Solution:
[c] $ MgO $ is insoluble, whereas $ MgSO_4 $ is soluble, whereas $ BaO $ is soluble, but $ BaSO_4 $ is insoluble.
BETA
