Which of the following alloys contain only $Cu$ and $Zn$?

The higher oxidation states of transition elements are found to be in combination with $A$ and $B,$ which are

Explain why $Cu^{+}$ ion is not stable in aqueous solutions?

If the colours of salts of transition elements are due to the presence of unpaired electrons in the transition metal ions,which of the following ions will be colourless in aqueous solution? (The atomic numbers of $Ti$ and $Fe$ are $22$ and $26$ respectively.)

$A$ substance which is not paramagnetic is

$A$ chloro compound of vanadium has a spin-only magnetic moment of $1.73 \ BM$. This vanadium chloride has the formula: