An atom of fluorine has an atomic mass of 19 u. keeping in mind that its atomic number is 9, what can you infer about this atom?

The fluorine atom has a neutron number of 10 it also have 10 valence electrons

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.

It was ernest rutherford