All the isotopes of plutonium has 94 protons and 94 electrons. For the number of neutrons of a specified isotope: number of neutrons = rounded atomic mass of the isotope-atomic number (or protons number).
Canada thistle can be killed with either Roundup or 2,4-D weed killers. These weed killers will kill back the leaves on the plant and will kill back some of the root system. The best time to apply these weed killers is on sunny days when the temperatures are between 65 and 85 degrees F. (18-29 C.).hese weed killers will kill back the leaves on the plant and will kill back some of the root system. The best time to apply these weed killers is on sunny days when the temperatures are between 65 and 85 degrees F. (18-29 C.).
Commercial preparations of weed killer are very effective but each plant must be treated individually. You can't spray weed killer because it will kill the grass as well. The most effective strategies on how to kill weeds without killing grass involve a combination of the following:ommercial preparations of weed killer are very effective but each plant must be treated individually. You can't spray weed killer because it will kill the grass as well. The most effective strategies on how to kill weeds without killing grass involve a combination of the following: