Consider the following statements about first ionization energies: Because the e
ID: 855237 • Letter: C
Question
Consider the following statements about first ionization energies:
Because the effective nuclear charge for Mg is greater than that for Be, the first ionization energy of Mg is greater than that of Be.
The first ionization energy of O is less than that of N because in O we must pair electrons in the 2p orbitals.
The first ionization energy of Ar is less than that of Ne because a 3p electron in Ar is farther from the nucleus than a 2p electron in Ne.
Which of the statements I, II, and III is or are true?
Explanation / Answer
1. first ionization energy of Mg is lesser than Be ( so first point is wrong)
2. True
3. True