Which period 3 element has successive first through seventh ionization energies (kJ/mol)of E_i1 = 578;E_i2 = 1,817;E_i3 = 2,745;E_i4 = 11,575;E_i5 = 14,830;E_i6 = 18,376;and E_i7 = 23,293? A)Mg B)Al C)S D)Cl

Question

Quizplus · Accepted Answer

The large jump in ionization energy between the third and fourth ionizations indicates the removal of electrons from a new, lower energy level, which is characteristic of aluminum (Al) moving from its p to s orbitals. Aluminum has three electrons in its outer shell, and after these are removed, the ionization energy significantly increases to remove an electron from a more stable, inner shell.

Which Period 3 Element Has Successive First Through Seventh Ionization