AP EAMCET · Chemistry · Classification of Elements and Periodicity in Properties
If the first ionisation enthalpy of \(\mathrm{Li}, \mathrm{Be}\) and C respectively are \(520,899,1086 \mathrm{~kJ} \mathrm{~mol}^{-1}\), the first ionisation enthalpy (in \(\mathrm{kJ} \mathrm{mol}^{-1}\) ) of B will be
- A 487
- B 950
- C 801
- D 1402
Answer & Solution
Correct Answer
(C) 801
Step-by-step Solution
Detailed explanation
First ionisation enthalpy of \(\mathrm{Li}, \mathrm{Be}\) and C respectively are \(520,899,1086 \mathrm{~kJ} \mathrm{~mol}^{-1}\). The ionisation energy depend on the (i) Size of the atom (ii) effective nuclear charge (iii) Screening effect (iv) Penetration effect (v) Electronic…
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