Questions: Q35 In chemical notation, the symbol Ca^2+ means a calcium ion that has lost two electrons. a calcium ion that has gained two protons. a calcium ion that has gained two electrons. a calcium ion that has lost two protons. two calcium atoms.

Q35 In chemical notation, the symbol Ca^2+ means a calcium ion that has lost two electrons. a calcium ion that has gained two protons. a calcium ion that has gained two electrons. a calcium ion that has lost two protons. two calcium atoms.

Transcript text: Q35 In chemical notation, the symbol $\mathrm{Ca}^{2+}$ means a calcium ion that has lost two electrons. a calcium ion that has gained two protons. a calcium ion that has gained two electrons. a calcium ion that has lost two protons. two calcium atoms.

Solution

Solution Steps

Step 1: Understanding the Chemical Notation

The chemical notation $\mathrm{Ca}^{2+}$ represents a calcium ion. The superscript $2+$ indicates the charge of the ion. In chemical notation, a positive charge indicates a loss of electrons.

Step 2: Analyzing the Charge

The $2+$ charge means that the calcium ion has lost two electrons. Electrons are negatively charged, so losing electrons results in a positive charge.

Step 3: Identifying the Correct Interpretation

Given the options: