`2,2'-` Dofluoro`-6,6'-`dimethylbiphenyl is non-resolvable, whereas `2,2'-` dinitro`-6,6'-` disulfonic acid biphenyl is resolvable. Account for this fact.

Explanation

To understand why 2,2'-Difluoro-6,6'-dimethylbiphenyl is non-resolvable while 2,2'-dinitro-6,6'-disulfonic acid biphenyl is resolvable, we need to analyze the structures and steric factors involved in both compounds.

### Step-by-Step Solution:

1. **Draw the Structures:**
- Start by drawing the structure of biphenyl, which consists of two phenyl rings connected by a single bond.
- For 2,2'-Difluoro-6,6'-dimethylbiphenyl:
- Place fluorine (F) atoms at the 2 and 2' positions of the biphenyl.
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