German silver is an alloy of
Copper, zinc and nickel
Copper and silver
Copper, zinc and tin
Copper, zinc and silver
Amongest following the lowest degree of paramagnetism per mole of the compound at $298 K$ will be shown by
Why first ionisation enthalpy of $\mathrm{Cr}$ is lower than that of $\mathrm{Zn}$ ?
For the first row transition metals the ${E^\Theta }$ values are:
${E^\Theta }$ | $V$ | $Cr$ | $Mn$ | $Fe$ | $Co$ | $Ni$ | $Cu$ |
$\left( {{M^{2 + }}/M} \right)$ | $-1.18$ | $-0.91$ | $-1.18$ | $-0.44$ | $-0.28$ | $-0.25$ | $+0.35$ |
Explain the irregularity in the above values.
In which pair of ions both are diamagnetic in nature?
The addition of metals like $Cr,\,Mn,\,W$ and $Ni$ to ordinary steel makes it