question_answer 1)

  Identify the correct formula of halides of alkaline earth metals from the following : (a) \[BaC{{l}_{2}}\cdot 2{{H}_{2}}O\]       (b) \[BaC{{l}_{2}}\cdot 4{{H}_{2}}O\]      (c) \[CaC{{l}_{2}}\cdot 6{{H}_{2}}O\]     (d) \[SrC{{l}_{2}}\cdot 4{{H}_{2}}O\]

Answer:

  (a, c) \[BaC{{l}_{2}}\cdot 2{{H}_{2}}O\] and \[CaC{{l}_{2}}\cdot 6{{H}_{2}}O\] are the correct formulae.