Final answer:
A substitution reaction will not result in changing the orientation of carbon bonds from tetrahedral to planar.
Step-by-step explanation:
A substitution reaction will not result in changing the orientation of bonds between carbon and other atoms from a tetrahedral configuration to a planar configuration. In a substitution reaction, one or more of the alkane's hydrogen atoms are replaced with a different atom or group of atoms, but the hybridization of the carbon atoms does not change.