B has a smaller first ionization enthalpy than Be. Consider the following statements:

(I) It is easier to remove a 2p electron than a 2s electron.

(II) The 2p electron of B is more shielded from the nucleus by the inner core electrons than the 2s electrons of Be.

(III) A 2s electron has greater penetration power than a 2p electron.

(IV) Atomic radius of B is more than Be (atomic number B = 5, Be = 4).

Which of the above statements are correct?

Question

B has a smaller first ionization enthalpy than Be. Consider the following statements:

(I) It is easier to remove a 2p electron than a 2s electron.

(II) The 2p electron of B is more shielded from the nucleus by the inner core electrons than the 2s electrons of Be.

(III) A 2s electron has greater penetration power than a 2p electron.

(IV) Atomic radius of B is more than Be (atomic number B = 5, Be = 4).

Which of the above statements are correct?

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B has a smaller first ionization enthalpy than Be. Consider the following statements: (I) It is easier to remove a 2p el…