Which of the following is not correct
$Mn_2O_7$ gives $H_2MnO_4$ on reaction with water
on heating $AgNO_3$ gives $Ag_2O$ and $NO_2$
$V_2O_5$ gives $VO_4^{ -1}$ and $VO_4^{+3}$ on reaction with alkalies
All are incorrect
Due to covalent bonding, the transitional metals are
Which one of the following has the maximum number of unpaired electrons
Magnetic moment $2.84\, B.M.$ is given by (At. nos. $Ni = 28, Ti = 22, $$Cr = 24, Co = 27$)
Comment on the statement that elements of the first transition series possess many properties different from those of heavier transition elements.
Which of the following ion is diamagnetic