MCQ
The diamagnetic species is
- A$[Co(H_2O)_6]^{2+}$
- B$[Ni(H_2O)_6)^{2+}$
- ✓$[Co(NH_3)_6]^{3+}$
- D$[Ni(NH_3)_6]^{2+}$
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Reason : $Si -O -Si$ linkages are moisture sensitive.
Assertion $(A)$ : $\alpha$-halocarboxylic acid on reaction with dil. $NH _3$ gives good yield of $\alpha$-amino carboxylic acid whereas the yield of amines is very low when prepared from alkyl halides.
Reason $(R):$ Amino acids exist in zwitter ion form in aqueous medium.
In the light of the above statements, choose the correct answer from the options given below :
