Question

ions are found in the compounds we use every day. this model shows how sodium and chlorine become ions in the formation of table salt, or sodium chloride (nacl). use the terms to complete the sentences below. negatively loses positively gains sodium an electron, and chlorine an electron. so the sodium atom becomes a charged ion, and the chlorine atom becomes a charged ion.

Explanation:

To solve this, we analyze the electron transfer in ionic bonding (as seen in NaCl formation). Sodium (Na) has 1 valence electron, so it loses an electron (to achieve stability). Chlorine (Cl) needs 1 electron to fill its outer shell, so it gains an electron. When an atom loses electrons, it has more protons than electrons, so it becomes positively charged (cation). When an atom gains electrons, it has more electrons than protons, so it becomes negatively charged (anion).

Answer:

Sodium \(\boldsymbol{\text{loses}}\) an electron, and chlorine \(\boldsymbol{\text{gains}}\) an electron. So the sodium atom becomes a \(\boldsymbol{\text{positively}}\) charged ion, and the chlorine atom becomes a \(\boldsymbol{\text{negatively}}\) charged ion.