Write the Lewis symbol for each atom or ion. c. S

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Identify the number of valence electrons in a sulfur (S) atom. Sulfur is in Group 16 of the periodic table, which means it has 6 valence electrons.

Draw the symbol for sulfur (S) to represent the nucleus and inner electrons.

Place dots around the symbol to represent the valence electrons. Since sulfur has 6 valence electrons, you will place six dots around the symbol.

Arrange the dots to minimize repulsion between electrons. Typically, place one dot on each of the four sides (top, bottom, left, right) before pairing any electrons.

Since sulfur has 6 valence electrons, after placing one dot on each side, pair up the remaining two electrons on any side. This results in two single dots and two pairs of dots around the symbol.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Lewis Symbols

Lewis symbols, also known as Lewis dot diagrams, represent the valence electrons of an atom or ion. Each dot corresponds to a valence electron, and the arrangement of these dots around the chemical symbol indicates how the atom can bond with others. This visual representation helps in understanding the bonding behavior and reactivity of elements.

Valence Electrons

Valence electrons are the outermost electrons of an atom and play a crucial role in chemical bonding. The number of valence electrons determines how an atom interacts with others, including the formation of covalent or ionic bonds. For sulfur (S), which is in group 16 of the periodic table, there are six valence electrons that can be represented in its Lewis symbol.

Ionic vs. Neutral Atoms

Understanding the difference between ionic and neutral atoms is essential for drawing accurate Lewis symbols. A neutral atom has an equal number of protons and electrons, while an ion has gained or lost electrons, resulting in a charge. For example, the Lewis symbol for a neutral sulfur atom (S) will differ from that of a sulfide ion (S²⁻), which has gained two additional electrons.