Answer:It combines a theoretically sound model of bonding with some experimentally determined parameters
It is faster to calculate than ab initio methods.
step-by-step explanation: Semi-emperical methods are fast and accurate in giving computational result for large molecules. Semi-emperical methods combines theoretically sound models of bonding with some experimentally determined parameters. It is based on Hartree-fock calculation,it is about the simplest form of Hartree-fock calculation It is also faster to calculate than ab initio methods.
Answer:
200
Step-by-step explanation:
Steps
6.6 x 10^{-2}/3.3 x 10-4
10^{-2}-4(-4) x 6.6/3.3
10^{-2} x 6.6 = 660/3.3
=200