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Polylab Molecular Model Set – Sodium Chloride – Open 27 Atoms is a highly effective educational model for demonstrating the iconic cubic crystal structure of sodium chloride (NaCl). This version uses an open-frame design, giving students a clear view of how each sodium and chloride ion is arranged and connected within the repeating three-dimensional lattice.

This Open Sodium Chloride Model includes 27 color-coded atom units and easy-fit connectors that replicate the rock salt structure’s unit cells and ionic arrangement. The open design makes it easy to see and explain key crystal lattice concepts such as coordination number, ion positioning, and electrostatic forces within an ionic solid.

Simple to assemble and stable when built, this 27-atom model is perfect for hands-on classroom activities, lab demonstrations, and visual learning. It helps students connect theory with real-world solid-state structures, making lessons on ionic bonding, unit cells, and lattice energy more engaging and understandable.

Durable and reusable, this NaCl model set comes packed in a sturdy storage box for easy organization and safe transport. Pair this open lattice model with other Polylab Molecular Model Sets to build a complete teaching toolkit covering ionic, covalent, and metallic crystal structures. For related teaching aids and advanced lattice kits, browse our Solid State Chemistry Models collection. For accurate structural data and crystallographic standards, refer to the International Union of Crystallography Resources, a trusted global reference for structural science.