Which of the following transition metal is present in misch metal?

Explain lanthanoid contraction in detail. What is lanthanoid contraction? What are its consequences?

The lanthanide contraction is responsible for the fact that

An element with electronic configuration $[Rn]\, 7s^2\, 5f^3\, 6d^1$ will fall in

The ionic radius of $La^{3+}$ is $1.06 \ \mathop{A}\limits^o$. Which of the following is the closest value for the ionic radius of $Lu^{3+}$ in $\mathop{A}\limits^o$? $(Lu = 71, La = 57)$

Which element from the following has a half-filled $f$ orbital in the $+3$ oxidation state?