Which of the following is not correct about transition metals
Their melting and boiling points are high
Their compounds are generally coloured
They can form ionic or covalent compounds
They do not exhibit variable valency
Effective magnetic moment of $S{c^{ + 3}}$ ion is
Although $Cr^{3+}$ and $Co^{2+}$ ions have same number of unpaired electrons but the magnetic moment of $Cr^{3+}$ is $3.87\,BM$. and that of $Co^{2+}$ is $4.87\,BM$. Why ?
An ornamental of gold having $75\%$ of gold, it is of .............. carat.
Which of the following complex ion has a magnetic moment same as $[Cr(H_2O)_6]^{3+}$ ?
The tendency of $ 3d-$ metal ions to form stable complexes is due to their