WBJEE · Chemistry · d and f Block Elements
The melting points of (i) BeCl\(_{2}\) (ii) \(\mathrm{CaCl}_{2}\) and (iii) \(\mathrm{HgCl}_{2}\) follows the order
- A \(i < ii < iii\)
- B \(iii < i < ii\)
- C \(i < iii < ii\)
- D \(ii < i < iii\)
Answer & Solution
Correct Answer
(B) \(iii < i < ii\)
Step-by-step Solution
Detailed explanation
Key Point A compound having more ionic character, has more melting point. Be and Ca belong to the same group and ionic character increases down the group. Thus, \(\mathrm{BeCl}_{2}\) is less ionic than \(\mathrm{CaCl}_{2}\). This means that melting point of \(\mathrm{CaCl}_{2}\)…
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