Which of the following orders is correct for the property mentioned in brackets?

  • A
    $S^{2-} > Cl^{-} > K^{+} > Ca^{2+}$ (Ionisation energy)
  • B
    $C < N < F < O$ ($2^{nd}$ Ionisation energy)
  • C
    $B > Al > Ga > In > Tl$ (Electronegativity)
  • D
    $Na^{+} > Li^{+} > Mg^{2+} > Be^{2+} > Al^{3+}$ (Ionic radius)

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Similar Questions

$(a)$ $Be$ and $Mg$ are alkaline earth metals.
$(b)$ $K^{+}$ has larger radii than $Ca^{2+}$.
$(c)$ All $d$-block elements are transition elements.
$(d)$ $H^{-}$ ion is larger than $F^{-}$.
Incorrect statement is/are

Which of the following pairs shows a diagonal relationship?

Match the following elements,given as hints to their first,second ionization enthalpies and electron gain enthalpies.
List-$I$List-$II$
$i)$ Most reactive non-metal$A$. $\Delta H_1=419, \Delta H_2=3051, \Delta_{Eg} H=-48$
$ii)$ Most reactive metal$B$. $\Delta H_1=1681, \Delta H_2=3374, \Delta_{Eg} H=-328$
$iii)$ Least reactive element$C$. $\Delta H_1=738, \Delta H_2=1451, \Delta_{Eg} H=-40$
$iv)$ Metal forming binary halide$D$. $\Delta H_1=3272, \Delta H_2=5251, \Delta_{Eg} H=+48$

Which elements in groups $1$ to $17$ differ in many respects from the other elements of their respective groups?

In general,the property (magnitudes only) that shows an opposite trend in comparison to other properties across a period is

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