An acidified manganate solution undergoes disproportionation reaction. The spin-only magnetic moment value of the product having manganese in higher oxidation state is $....\,B.M.$ (Nearest integer)
$2$
$56$
$10$
$0$
Many transition metals form interstitial compounds. The characteristics of these interstitial compounds are
$(I)$ They have high melting points, higher than those of pure metals
$(II)$ They are very hard
$(III)$ They retain metallic conductivity
$(IV)$ They are chemically more reactive than the pure metals
Which of the following ions will exhibit colour in aqueous solutions?
Which one of the following species is stable in aqueous solution ?
Which of the following ions has the highest magnetic moment
In first transition series, the melting point of $Mn$ is low because