Periodic Properties

Step 1: Verifying Statement I
- Ionization enthalpy is the energy required to remove an electron from an atom.
- Electronegativity is the tendency of an atom to attract electrons in a bond.
- In the periodic table, ionization enthalpy and electronegativity generally increase from left to right.
- Nitrogen (group 15) is to the right of Beryllium (group 2), meaning Nitrogen has a higher ionization enthalpy and electronegativity than Beryllium.
Conclusion: Statement I is correct.
Step 2: Verifying Statement II
- (Chromium trioxide) is an acidic oxide. It reacts with water to form chromic acid ( ).
- (Boron trioxide) is also an acidic oxide, forming boric acid ( ) when dissolved in water.
- Acidic oxides typically react with bases to form salts.
Conclusion: Statement II is also correct.
Final Answer: Since both statements are correct, the correct option is (1) Both statements I and II are correct.