MCQ
On bromination, propionic acid yields two isomeric $2-$bromopropionic acids. This pair is an important example of
- AChain isomers
- ✓Optical isomers
- CCis-trans isomers
- DPosition isomers
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Assertion $(A) :$ Metallic character decreases and non-metallic character increases on moving from left to right in a period.
Reason $(R)$ $:$ It is due to increase in ionisation enthalpy and decrease in electron gain enthalpy, when one moves from left to right in a period.
In the light of the above statements, choose the most appropriate answer from the options given below :