Question

Read the following questions and answer as per the directions given below:

Statement – I: The first ionization energy of Be is greater than that of B.

Statement – II: 2p-orbital is lower in energy than 2s.

• A. Statement – I is true; Statement – II is true; Statement-II is the correct explanation for Statement – I.
• B. Statement – I is true; Statement – II is true; Statement-II is not the correct explanation for Statement – I.
  
• C. Statement – I is true; Statement – II is false.
  
• D. Statement – I is false; Statement – II is true.

Answer 1

The correct option is C

Statement – I is true; Statement – II is false.

More the value of (n + l), more the energy of the orbital.
For 2p, (n + l) is 3 and for 2s, (n + l) is 2