The association constant( \(k_a\)) reflects the strength of binding between an enzyme and its substrate. It is inversely proportional to the dissociation constant (\(k_d\)).
Europium (Eu) resembles Calcium (Ca) in the following ways:
(A). Both are diamagnetic
(B). Insolubility of their sulphates and carbonates in water
(C). Solubility of these metals in liquid NH3
(D). Insolubility of their dichlorides in strong HCI
Choose the correct answer from the options given below: