MCQ
The $3^{rd}$ ionisation energy amongst $Li, Be, B$ and $C$ is lowest for
- A$Li$
- B$Be$
- ✓$B$
- D$C$
✓
Answer
Correct option: C.
$B$
c
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The $IUPAC$ name of $\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-C-CH-CH-C{{H}_{2}}-C{{H}_{3}} \\
|\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}\,\,C{{H}_{3}}\,\,\,\,\,I\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\end{matrix}$ is
→C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-C-CH-CH-C{{H}_{2}}-C{{H}_{3}} \\
|\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}\,\,C{{H}_{3}}\,\,\,\,\,I\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\end{matrix}$ is
In which of the following compound electrophilic attacks at ortho and para positions:
The number of $s{p^3}$ hybridized carbon atoms in cyclohexene are
→Which of the following compounds will show geometrical isomerism ?
$C{H_3} - C{H_2} - CH = O\,\xrightarrow[{(2)\,\,{H^ \oplus }}]{{(1)\,\,{\text{Tollen's reagent}}}}X$ $\,\xrightarrow[{(2)\,\,{\text{drydistillation}}}]{{(1)\,Ca{{(OH)}_2}}}\,Y$ ; $Y$ is
→Which element out of $He,$ $Ar,$ $Kr,$ and $Xe$ forms least number of compounds
→Following is the graph between $(a-x)^{-1}$ and time $t$ for second order reaction if $\theta = {\tan ^{ - 1}}\left( {\frac{1}{2}} \right)$ ; $OA = 2\,L\,mol^{-1}$ then rate at the start of reation will be $ [$ in $L\, mol^{-1}\,min^{-1}]$
→Among the following chloro-compound having the lowest dipole moment is
The $IUPAC$ name for the formula
→$\begin{array}{*{20}{c}}
{\,\,\,\,H} \\
{\,\,\,\,|} \\
{C{H_3} - C = C - COOH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$
How many $g$ of a dibasic acid (Mol. wt. $= 200$) should be present in $100 \,ml$ of its aqueous solution to give decinormal strength ............ $\mathrm{g}$
→