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

Y b^{3 +} > L u^{3 +} > E u^{3 +} > L a^{3 +}

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

L u^{3 +} < Y b^{3 +} < E u^{3 +} < L a^{3 +}

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

L u^{3 +} < E u^{3 +} < L a^{3 +} < Y b^{3 +}

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

L a^{3 +} < E u^{3 +} < L u^{3 +} < Y b^{3 +}

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

Open in App

Solution

The correct option is B $L u^{3 +} < Y b^{3 +} < E u^{3 +} < L a^{3 +}$
In periodic table, as we move from left to right in any period, the atomic and ionic radii decreases. This is due to the increase in a nuclear charge in a period.
Thus the correct order of ionic radii in Lanthanoid is:
Ionic radii order: $L u^{3 +} < Y^{3 +} < E u^{3 +} < L a^{3 +}$

Suggest Corrections

Similar questions

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

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

C e^{3 +}, L a^{3 +}, P m^{3 +}

Y b^{3 +}

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

L u^{3 +}

C e, L a, P m

Y b

+ 3

Join BYJU'S Learning Program