Q. The radius ratio of $KF$ is $0.98$. The structure of $KF$ is of the type

NTA AbhyasNTA Abhyas 2022 Report Error

A

$NaCl$

B

$ZnS$

C

$CsCl$

D

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Solution:

As $\frac{ r _{+}}{ r _{-}}$lies in the range $0.732-1.000$. Hence the coordination number is $8$ and crystal is of $CsCl$ type.

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2.

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4. Hybridisation, shape and magnetic moment of $\mathrm{K}_3\left[\mathrm{Co}\left(\mathrm{CO}_3\right)_3\right]$ is

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5. In the reaction

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$ E _{ Mn ^{2+} / MnO _{4}^{-}}^{\circ}=-1.510\, V$
$\frac{1}{2} O _{2}+2 H ^{+}+2 e ^{-} \rightarrow H _{2} O ,$
$ E _{ O _{2} / H _{2} O }^{\circ}=+1.223 \,V$
Will the permanganate ion, $MnO _{4}^{-}$liberate $O _{2}$ from water in the presence of an acid ?

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$\lambda^{o}_{m}\left(in \,S \,cm^{2} mol^{-1}\right)$ for $CH_3COOH$ will be-

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the number of sigma(s) bonds present in the product A is :-

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