Q3 / 160 · AP EAMCET 2024 (22 May Shift 2) · Chemistry
Two statements are given below.
Statement I: Nitrogen has more ionization enthalpy and electronegativity than beryllium
Statement II: $\mathrm{CrO}_3, \mathrm{~B}_2 \mathrm{O}_3$ are acidic oxides
Correct answer is
- Correct answerABoth statements I and II are correct
- BBoth statements I and II are not correct
- CStatement I is correct, but statement II is not correct
- DStatement I is not correct, but statement II is correct
Solution
Ionization enthalpy depends on the
(i) Size of the atom
(ii) Effective nuclear charge
(iii) Electronic configuration.
In periodic table left to right ionisation enthalpy increases and nitrogen have half-field electronic configuration so its ionisation enthalpy is more. $\mathrm{B}_2 \mathrm{O}_3$ (Borontrioxide) and $\mathrm{CrO}_3$ is acidic oxide. So both statements are correct.
In periodic table left to right ionisation enthalpy increases and nitrogen have half-field electronic configuration so its ionisation enthalpy is more. $\mathrm{B}_2 \mathrm{O}_3$ (Borontrioxide) and $\mathrm{CrO}_3$ is acidic oxide. So both statements are correct.
Hence, the correct answer is option: 'A'.