Incorrect order of ionic radius is:

L a^{+ 3} > G d^{+ 3} > E u^{+ 3} > L u^{+ 3}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

V^{+ 2} > V^{+ 3} > V^{+ 4} > V^{+ 5}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

I n^{+} > S n^{+ 2} > S b^{+ 3}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

K^{+} > S c^{+ 3} > V^{+ 5} > M n^{+ 7}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A $L a^{+ 3} > G d^{+ 3} > E u^{+ 3} > L u^{+ 3}$
In $4 f$ - series $,$ due to imperfect shielding of $f$ -orbital and more diffused nature of $f$ -orbital outermost electron experiences more $Z_{e f f}$ and down the group size decreases due to more $Z_{e f f} .$

Suggest Corrections

Similar questions

Which of the following are amphoteric oxides?

$M n_{2} O_{7}, C r O_{3}, C r_{2} O_{3}, C r O, V_{2} O_{5}, V_{2} O_{4}$

The correct order of ionic radius for $Y^{3 +}, L a^{3 +}, E u^{3 +}$ and $L u^{3 +}$ is:

M n_{2} O_{7}, C r O_{3}, C r_{2} O_{3}, C r O, V_{2} O_{5}, V_{2} O_{4}

Y^{3 +}, L a^{3 +}, E u^{3 +}

L u^{3 +}

Y^{3 +}, E u^{3 +}, L a^{3 +}, L u^{3 +}

Join BYJU'S Learning Program