The s-block Elements — Chemistry STD 11 Science — Question
Gujarat BoardEnglish MediumSTD 11 ScienceChemistryThe s-block Elements1 Mark
Question
The second ionization enthalpy of Ca is higher than first and yet calcium forms $\mathrm{CaCl}_2$ and not CaCl , why?
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Answer
The hydration energy of $\mathrm{Ca}^{2+}$ overcomes the second ionisation energy of Ca , that is why Ca forms $\mathrm{CaCl}_2$ and not $\mathrm{CaCl} . \mathrm{Ca}^{+}$is not stable.
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