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  • Which of the following arrangements are correct?Option: 1 <img alt="\mathrm{V}<\mathrm{Ti}<\mathrm{Mn}<\mathrm{Co} : \text{Atomic size}" src

Which of the following arrangements are correct?

Option: 1

\mathrm{V}<\mathrm{Ti}<\mathrm{Mn}<\mathrm{Co} : \text{Atomic size}


Option: 2

\mathrm{Co}^{2+}<\mathrm{Ni}^{2+}<\mathrm{Cr}^{3+}<\mathrm{V}^{2+} : \text{Stability in aqueous solution.}


Option: 3

\mathrm{V}^{2+}<\mathrm{Cr}^{2+}<\mathrm{Mn}^{2+}<\mathrm{Fe}^{2+} : \text{Paramagnetic behavior}


Option: 4

\mathrm{Co}^{2+}<\mathrm{Fe}^{2+}<\mathrm{Ni}^{2+}<\mathrm{V}^{2+}: \text{ionic size}


Answers (1)

best_answer

For the first option, the size decreases along the group. For the second option, stability in an aqueous solution is dependent on electrode potential. More negative the electrode potential more stable solution. Electrode potential increases across the period in the transition series. The third option depends on the presence of number of unpaired electrons. So, it increases as given in the option. For the fourth option the size decreases along the group as we move from left to right, if the charge remains same.

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