In the Bohr model of the atom, the electrons move in fixed, paths around a dense, positively-charged nucleus. On the other hand, the quantum mechanical model shows the probability of finding an electron as a of negative charge. Question 18 options:

circular; cloud

horizontal; cloud

circular; beam

even, photon

Answer is in parentheses.

In the Bohr model of the atom, the electrons move in fixed, (circular) paths around a dense, positively-charged nucleus. On the other hand, the quantum mechanical model shows the probability of finding an electron as a (cloud) of negative charge.

2positives of biotechnology: 1. plants have become more resistant to viruses and other communicable pests.2. with the of biotechnology, we have been able to produce better tasting fruits as well as vegetables.2 negatives of biotechnology: 1. biotechnology poses a number of environmental threats. genetically modifies crops often infect monarch butterflies and other insect species.2. viruses could combine with crops.