Question

ionic compounds can be represented by bohr model diagrams and lewis dot structures. the valence electrons of a cation are not shown in its lewis dot structure. bohr model of nacl lewis dot structure of nacl select the true statements. valence electrons are shown in the bohr model of a sodium cation. a sodium cation has zero valence electrons. both the bohr model and the lewis dot structure represent an ionic bond between a metal and a nonmetal. valence electrons are shown in the lewis dot structure of a chloride anion.

Explanation:

• In the Bohr model, all electrons including valence electrons are shown for an ion, so valence electrons are shown in the Bohr model of a sodium cation.
• A sodium atom (Na) has 11 electrons with electron - configuration 2, 8, 1. When it forms a sodium cation (Na⁺) by losing its outermost electron, it has 10 electrons with configuration 2, 8 and thus zero valence electrons.
• Sodium is a metal and chlorine is a non - metal. In both the Bohr model and Lewis dot structure of NaCl, they show an ionic bond between a metal and a non - metal.
• In the Lewis dot structure of a chloride anion (Cl⁻), the valence electrons are shown as dots around the symbol.

Answer:

Valence electrons are shown in the Bohr model of a sodium cation.
A sodium cation has zero valence electrons.
Both the Bohr model and the Lewis dot structure represent an ionic bond between a metal and a nonmetal.
Valence electrons are shown in the Lewis dot structure of a chloride anion.