The set that contains the atomic numbers of o | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Transition elements are defined as elements which have incompletely filled $d$-orbitals in their ground state or in any of their oxidation states.

Vedclass · Accepted Answer

$21, 25, 42, 72$

Vedclass · Answer

(B) Transition elements are defined as elements which have incompletely filled $d$-orbitals in their ground state or in any of their oxidation states.These include elements with atomic numbers:$21-30$ (first transition series),$39-48$ (second transition series),$57$ and $72-80$ (third transition series),$89$ and $104-112$ (fourth transition series).In the given set $21, 25, 42, 72$:$21$ $(Sc)$,$25$ $(Mn)$,$42$ $(Mo)$,and $72$ $(Hf)$ are all transition elements.Therefore,the correct set is $21, 25, 42, 72$.

The set that contains the atomic numbers of only transition elements is -

Similar Questions

$A$ first row transition metal in its $+2$ oxidation state has a spin-only magnetic moment value of $3.86 \ BM$. The atomic number of the metal is

Which of the following sets correctly represents the increase in the paramagnetic property of the ions?

Which of the following shows variable valency?

The electronic configuration of $Ag$ atom is

For $Cr, Mn, Fe,$ and $Co$,the $E_{{M^{3+}}/{M^{2+}}}^{\circ}$ values are $0.41, +1.57, +0.77,$ and $+1.97 \ V$ respectively. Which of these metals is most easily oxidized from the $+2$ to the $+3$ oxidation state?

Vedclass Test Series

Exam Paper Generator

Online Exam Module