Which of the following species is expected to show the highest magnetic moment? (At. Nos.: $Cr=24$, $Mn = 25$, $Co = 27$, $Ni = 28$, $Cu = 29)$
$C{r^{2 + }}$
$M{n^{2 + }}$
$C{u^{2 + }}$
$C{o^{2 + }}$
The transition metals have a less tendency to form ions due to
Which of the following metal is present in Brass, Bronze and German silver ?
Consider the following reaction
$\mathrm{MnO}_2+\mathrm{KOH}+\mathrm{O}_2 \rightarrow \mathrm{A}+\mathrm{H}_2 \mathrm{O} .$
Product ' $A$ ' in neutral or acidic medium disproportionate to give products ' $\mathrm{B}$ ' and ' $\mathrm{C}$ ' along with water. The sum of spin-only magnetic moment values of $B$ and $C$ is . . . . . .$BM$. (nearest integer)
(Given atomic number of $\mathrm{Mn}$ is $25$ )
Cigarette or gas lighter is made up of
If spin only magnetic moment of $VCl_X$ is $1.73\,BM$ then correct formula is