---
title: "A student investigates the reaction between solid calcium, \\(\\text{Ca(s)}\\), and chlorine gas, \\(\\text{Cl}_2\\text{(g)}\\), to produce a white crystalline solid. Based on the valence electron configurations of calcium (\\([\\text{Ar}]\\,4s^2\\)) and chlorine (\\([\\text{Ne}]\\,3s^2\\,3p^5\\)), which of the following balanced chemical equations correctly represents the reaction, along with the total quantity of valence electrons transferred per mole of product formed?"
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url: "https://nerd-notes.com/ubq/120176/"
date_modified: "2026-08-21T16:02:48+00:00"
---

# A student investigates the reaction between solid calcium, \(\text{Ca(s)}\), and chlorine gas, \(\text{Cl}_2\text{(g)}\), to produce a white crystalline solid. Based on the valence electron configurations of calcium (\([\text{Ar}]\,4s^2\)) and chlorine (\([\text{Ne}]\,3s^2\,3p^5\)), which of the following balanced chemical equations correctly represents the reaction, along with the total quantity of valence electrons transferred per mole of product formed?

A student investigates the reaction between solid calcium, \(\text{Ca(s)}\), and chlorine gas, \(\text{Cl}_2\text{(g)}\), to produce a white crystalline solid. Based on the valence electron configurations of calcium (\([\text{Ar}]\,4s^2\)) and chlorine (\([\text{Ne}]\,3s^2\,3p^5\)), which of the following balanced chemical equations correctly represents the reaction, along with the total quantity of valence electrons transferred per mole of product formed?

- **A.** \(\text{Ca(s)} + \text{Cl}_2\text{(g)} \rightarrow \text{CaCl}_2\text{(s)}\), with \(1\text{ mol}\) of electrons transferred per mole of \(\text{CaCl}_2\text{(s)}\)
- **B.** \(\text{Ca(s)} + \text{Cl}_2\text{(g)} \rightarrow \text{CaCl}_2\text{(s)}\), with \(2\text{ mol}\) of electrons transferred per mole of \(\text{CaCl}_2\text{(s)}\)
- **C.** \(2\,\text{Ca(s)} + \text{Cl}_2\text{(g)} \rightarrow 2\,\text{CaCl(s)}\), with \(1\text{ mol}\) of electrons transferred per mole of \(\text{CaCl(s)}\)
- **D.** \(\text{Ca(s)} + 2\,\text{Cl}_2\text{(g)} \rightarrow \text{CaCl}_4\text{(s)}\), with \(4\text{ mol}\) of electrons transferred per mole of \(\text{CaCl}_4\text{(s)}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/120176/*