For the ions Zn ^{2+}, ,Ni ^{2+} and Cr ^{3+} | vedclass

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Question

The ions which consist of paired electrons are colourless and those with unpaired electrons are coloured in nature.

In this case $Zn ^{2+}$ have to

Vedclass · Accepted Answer

Only $Zn ^{2+}$ is colourless and $Ni ^{2+}$ and $Cr ^{3+}$ are coloured.

Vedclass · Answer

The ions which consist of paired electrons are colourless and those with unpaired electrons are coloured in nature.

In this case $Zn ^{2+}$ have total $28$ numbers of electrons. $Cr ^{3+}$ have total $21$ numbers of electrons and $Ni ^{2+}$ have total $26$ numbers of electrons.

For the ions $Zn ^{2+}, \,Ni ^{2+}$ and $Cr ^{3+}$ which among the following statements is correct ?

(Atomic number of $Zn =30,\,Ni =28$ and $Cr =24$ )

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For the ions $Zn ^{2+}, \,Ni ^{2+}$ and $Cr ^{3+}$ which among the following statements is correct ? (Atomic number of $Zn =30,\,Ni =28$ and $Cr =24$ )