Metal used for making joints in jewellery is
$Zn$
$Cu$
$Ag$
$Cd$
Calculate the 'spin only' magnetic moment of $M ^{2+}(\operatorname{aq})$ ion $(Z=27)$
The melting point of $Zn$ is lower as compared to those of the other elements of $3d$ series because
Which of the following pair of transitional elements exhibit highest and lowest density
In $d-$ block $3d$ series, which of the following element has maximum size ?
The aqueous solution of transition metal salt changes colour from pink to blue, when concentrated hydrochloric acid is added to it. The change In colour is due to