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.).
The active ingredient in Weed-B-Gon is 2, 4-D, which kills poison ivy but does not kill grass. The safety of nearby grass makes Weed-B-Gon a popular choice for many homeowners. Weed-B-Gon does not kill the root of the plant, so more than one application may be required in order to effectively eliminate the poison ivy.