The First Eight Successive Ionization Energies IE₁, IE₂, …) for Al

question 130

Multiple Choice

The first eight successive ionization energies IE₁, IE₂, …) for Al are 578; 1817; 2745; 11,577; 14,842; 18,379; 23,326; and 27,465 kJ/mol.What is the probable explanation for the large jump in energy observed between IE₃ and IE₄?

• A)Z_eff decreases as electrons are removed.
• B)Electrons in ns and np orbitals are equal in energy.
• C)IE₄ reflects that inner-shell electrons with a lower n value are starting to be removed.
• D)Aluminum cannot lose four electrons, so IE₄ is meaningless.
• E)Electrons with higher angular momentum are harder to remove.

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