MCQ
Which one of the following has largest ionic radius?
- ✓$O_2^{2 - }$
- B$Li^+$
- C$B^{3+}$
- D$F^-$
✓
Answer
Correct option: A.
$O_2^{2 - }$
a
On moving along a period ionic radii decreases due to increase in effective nuclear charge
On moving along a period ionic radii decreases due to increase in effective nuclear charge
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
Product of the reaction is
A hydrocarbon of formula ${C_6}{H_{10}}$ absorbs only one molecule of ${H_2}$ upon catalytic hydrogenation. Upon ozonolysis, the hydrocarbon yields $\begin{array}{*{20}{c}}
{\,H\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,H} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\
{O = C - C{H_2} - C{H_2} - C{H_2} - C{H_2} - C = O}
\end{array}$ The hydrocarbon is
→{\,H\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,H} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\
{O = C - C{H_2} - C{H_2} - C{H_2} - C{H_2} - C = O}
\end{array}$ The hydrocarbon is
In the given reaction :
→$\begin{array}{*{20}{c}}
{\,\,\,\,\,OH\,\,\,\,\,\,\,OH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\
{C{H_3} - CH - C - C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}}
\end{array}\xrightarrow{{HI{O_4}}}(a) + (b)$
$(a)$ and $(b)$ respectively be :
Which of the following is the most polar
Increasing value of magnetic moments is
→$(I)\,\,[Fe(CN)_6]^{4-}$ $(II)\,\,[Fe(CN)_6]^{3-}$
$(III) [Cr(NH_3)_6]^{3+}$ $(IV)\,\,[Ni(H_2O)_4]^{2+}$
A nitrogen containing organic compound gave an oily liquid on heating with bromine and potassium hydroxide solution. On shaking the product with acetic anhydride, an antipyretic drug was obtained. The reactions indicate that the starting compound is
The compound $A$ with following sequence of reaction gave benzoic acid.
→$A\xrightarrow{NaN{{O}_{2}}/HCl}B\xrightarrow{KCN}C\xrightarrow{{{H}_{3}}{{O}^{+}}}$ benzoic acid
The compound $ A$ is
Considering that $\Delta_{0}> P ,$ the magnetic moment (in $BM$) of $\left[ Ru \left( H _{2} O \right)_{6}\right]^{2+}$ would be
→In a saturated solution of $Mg(OH)_2,$ the degree of dissociation of $Mg(OH)_2$ is $\alpha $, find concentration $(C)$ of $Mg(OH)_2$ if concentration of $[OH^-],$ is $2$
→The reaction of aqueous $KMnO_4$ with $H_2O_2$ in acidic conditions gives
→