The neutron is a subatomic particle found in the nucleus of an atom, along with protons. Unlike protons, which are positively charged, and electrons, which are negatively charged, neutrons have no electrical charge, making them neutral particles.
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: