MCQ
Correct order of extent of overlapping is
- A$1s-1s < 2s-2s < 2s-2p$
- B$2p-2p\, (axial) < 2p-2p\, (colateral)$
- ✓$1s-1s > 2p-2p\, (axial) > 2s-2p > 2s-2s$
- D$1s-1s > 2s-2p > 2s-2s > 2p-2p\, (axial)$
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$A.\,\,F -CH_2\,\,CH_2\,\,COOH$
$\begin{array}{*{20}{c}}
{B.\,\,Cl - CH - C{H_2} - COOH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,Cl\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$
$C.\,\,F -CH_2 -COOH$
$D.\,\,Br -CH_2-CH_2 -COOH$
Correct answer is
Statement $I$ : Boron is extremely hard indicating its high lattice energy
Statement $II$ : Boron has highest melting and boiling point compared to its other group members.
In the light of the above statements, choose the most appropriate answer from the options given below
