Answer:
Tetrahedral electron geometry and trigonal pyramidal molecular geometry.
Explanation:
The Lewis structure is shown in Figure 1.
The central N atom has three bonding pairs and one lone pair, for four electron groups.
VSEPR theory predicts a tetrahedral electron geometry with bond angles of 109.5°.
We do not count the lone pair in determining the molecular shape.
The molecular geometry is trigonal pyramidal (see Figure 2).
Tetrahedral electron geometry and trigonal pyramidal molecular geometry are predicted by the central atom in NCl3 .
A tetrahedral is a kind of pyramidal structure that has four “equal” triangular sides or faces .
A tetrahedral pyramid can only be achieved when all four substituent atoms are the same and all of them are placed at the corners of the tetrahedron .
A trigonal pyramid, on the other hand, have polar molecules because of the lone atom within its structure .
A trigonal pyramid, on the other hand, has one lone atom and three identical atoms at its corners.
Hence, tetrahedral electron geometry and trigonal pyramidal molecular geometry are predicted by the central atom in NCl3 .
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