Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
Und group basic radicals are: (1) \[Pb\] (2)\[Ba\] (3) \[Sb\] (4)\[Ni\]A) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: D
Solution :
Second group basic radicals are\[Pb\]and\[Sb\]. Ba is a Vth group basic radical. Ni is a IVth group basic radical.
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