Which of the atoms in Group 4A has the highest ionization energy?
A) C
B) Ge
C) Sn
D) Si
E) Pb

Question

Quizplus · Accepted Answer

As we move down a group, the atomic size increases, making it easier to remove an electron. Therefore, the atom in Group 4A with the smallest atomic radius (highest effective nuclear charge) will have the highest ionization energy. Of the options given, carbon (A) has the smallest atomic radius and therefore the highest ionization energy.

Which of the Atoms in Group 4A Has the Highest