Which of the Following Chemical Expressions Refers to the First

question 3

Multiple Choice

Which of the following chemical expressions refers to the first ionization energy of calcium?

• A) Ca(s)→ Ca⁺(s)+ e−
• B) Ca(g)+ e− → Ca⁺(g)
• C) Ca(s)+ e− → Ca⁺(s)
• D) Ca(g)→ Ca⁺(g)+ e−
• E) Ca(g)→ Ca²⁺(g)+ e−

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