Which equation correctly represents the electron affinity of calcium? A)Ca (g)+ e^- → Ca^- (g) B)Ca (g)→ Ca⁺ (g)+ e^- C)Ca (g)→ Ca^- (g)+ e^- D)Ca^- (g)→ Ca (g)+ e^- E)Ca⁺ (g)+ e^- → Ca (g)

Question

Quizplus · Accepted Answer

Electron affinity is the energy change that occurs when an atom in the gaseous state accepts an electron to form a negative ion. The correct equation is therefore Ca (g) + e- → Ca- (g), which represents the addition of an electron to a neutral calcium atom to form a calcium anion.

Which Equation Correctly Represents the Electron Affinity of Calcium