Identify false statement about transition elements.
Identify false statement about transition elements.
These exhibit properties between those of s and p block elements.
All these elements are grouped as 3d to 6 d series.
5 d series is comprised of all elements from $\mathrm{La}(Z=57)$ to $\mathrm{Hg}(Z=80)$.
Elements of 6 d series belongs to $7^{\text {th }}$ period of periodic table.
Solution
The $\mathbf{5 d}$ series of transition elements includes elements from Z = 72 (Hf, Hafnium) to Z = 105 (Db, Dubnium), not from Z = 57 (La, Lanthanum) to Z = 80 (Hg, Mercury). The elements from $\mathrm{Z}=57$ to $\mathrm{Z}=71$ are the lanthanides (rare earth elements), and Hg ( $\mathrm{Z}=$ 80) is a part of the group 12 elements, not the 5d transition series.