Which equation represents the first ionization of calcium?

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$\begin{aligned} Ca (g) \to {Ca}^{+} (g) + e^{-} \end{aligned}$

$\begin{aligned} {Ca}^{+} (g) \to {Ca}^{2 +} (g) + e^{-} \end{aligned}$

$\begin{aligned} {Ca}^{2 +} (g) + e^{-} \to {Ca}^{+} (g) \end{aligned}$

answer is B.

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Detailed Solution

The equation represents the first ionization of calcium is $\begin{aligned} Ca (g) \to {Ca}^{+} (g) + e^{-} \end{aligned}$ .

Initial ionisation The energy needed to take the first electron out of a neutral atom is called the removal energy. It has the same numerical value as the electron's orbital energy but the opposite sign.

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