MCQ
Which statement is true about the transitional elements
- AThey are highly reactive
- ✓They show variable oxidation states
- CThey have low M.P.
- DThey are highly electropositive
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End product $(D)$ in the given sequence is

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 :
