Question

which of the following illustrations shows a tetrahedral geometry?

Explanation:

Tetrahedral geometry in molecular structures has a central atom bonded to four other atoms (or groups) with bond angles of approximately 109.5°, and the arrangement is three - dimensional, with the four bonded atoms forming the vertices of a tetrahedron. The first illustration (yellow - bordered) shows a central gray atom bonded to four orange atoms in a three - dimensional arrangement consistent with tetrahedral geometry. The other illustrations have different geometries: the purple - bordered has a different electron - domain or bonding arrangement, the orange - bordered has a combination that doesn't fit tetrahedral, the teal - bordered is linear, and the blue - bordered is trigonal planar or a different non - tetrahedral arrangement.

Answer:

The illustration with the yellow border (the top - most one) shows a tetrahedral geometry.