Consider the isoelectronic species, Na^+, ,Mg^ 2+ , ,F^- and O^ 2… - Vidyadip

MCQ

Consider the isoelectronic species, $Na^+,\,Mg^{2+},\,F^-$ and $O^{2-}$. The correct order of increasing order of their radii is.

A
$F^-< O^{2-} < Mg^{2+} < Na^+$
✓
$Mg^{2+} < Na^+ < F^-< O^{2-}$
C
$O^{2-} < F^-< Na^+ < Mg^{2+}$
D
$O^{2-} < F^-< Mg^{2+} < Na^+$

✓

Answer

Correct option: B.

$Mg^{2+} < Na^+ < F^-< O^{2-}$

b
For isoelectronic species size order is

cation $<$ Neutral $<$ Anion

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 3. Classification of elements and periodicity in properties→3. Classification of elements and periodicity in properties — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Oxalic acid - $pK_1$
Malonic acid - $pK_2$
Heptanedioic acid - $pK_3$

where $pK_1 , pK_2, pK_3$ are first ionization constants. Incorrect order is

lkaline earth metals act as:

Disymmetric object is one which is

Alkane with more boiling point is :

Which is not correct in case of $\ce{Be}$ and $\ce{Al}\ ?$

How many of following compounds are showing tautomerism phenomenon

$2\,mol$ of zinc is dissolved in $HCl$ at $25\,^oC.$ The work done is open vessel

If the bond dissociation energies of $XY,\,{X_2}$ and ${Y_2}$ (all diatomic molecules) are in the ratio of $1 : 1 : 0.5 $ and ${\Delta _f}H$ for the formation of $XY$ is $ - 200\,kJ\,mol{e^{ - 1}}$. The bond dissociation energy of ${X_2}$ will be.....$kJ\,mo{l^{ - 1}}$

The following equilibrium exists in an aqueous solution of hydrogen sulphide : ${H_2}S $ $\rightleftharpoons$ $ {H^ + } + H{S^ - }$

If dilute $HCl$ is added to an aqueous solution of ${H_2}S$ without any change in temperature

Which is the correct order of second ionization potential of $C, N, O$ and $F$ in the following ?