The First Ionization Energy of Sodium Is 495 $\rarr$ Na⁺(g) + E^- Is Therefore
A) 495

question 76

Multiple Choice

The first ionization energy of sodium is 495.9 kJ/mol. The energy change for the reaction Na(s) $\rarr$ Na⁺(g) + e^- is therefore

• A) 495.9 kJ/mol.
• B) less than 495.9 kJ/mol.
• C) greater than 495.9 kJ/mol.
• D) is equal to the electron affinity of sodium.
• E) is equal to the second ionization energy of sodium.

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