Coordination compound
 Magnetic movement 
 
$$ \mu = \sqrt{n(n + 2)}BM $$
 Stability constant for reaction 
 
$$ \text{for reaction : M + 4L} \rightleftharpoons  ML_{\,4}$$
$$ \text {overall stability constant of complex }: $$
	$$  (ML_{\,4}) is  \beta_{\,4}   $$
$$  = \frac{[ML_{\,4}]}{[M][L]^{4}}   $$
