Question

Statement I: The alkali metals have a large increase between their first and second ionization energies.
Statement II: It takes more energy to remove an electron from a principal energy level since it is closer to the nucleus.

• A. Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1
• B. Both the Statement 1 and Statement 2 are correct and Statement 2 is not the correct explanation of Statement 1.
• C. Statement 1 is correct but Statement 2 is not correct.
• D. Statement 1 is not correct but Statement 2 is correct.
• E. Both the Statement 1 and Statement 2 are not correct.

Answer 1

The correct option is B Both the Statement 1 and Statement 2 are correct and Statement 2 is not the correct explanation of Statement 1.

In Alkali metals after first Ionization, the metal atom attains Inert gas Configuration which is more stable hence second ionization energy has a large increase from first ionization energy.

As the principal energy level is more closer to nucleus, more is the attraction force between nucleus and electron, difficult is to remove the electron.