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.).
Transfer the herbicide solution to a garden sprayer. Spray pokeweed leaves with the herbicide solution thoroughly until the plant is moist. Protect desirable plants growing near the pokeweed by covering them with a piece of cardboard while spraying the pokeweeds.erbicide Control. Wear safety glasses and latex or rubber gloves. Pour 1/2 gallon of water into a large bucket. Add 1 to 2 tablespoons of an herbicide that lists Dimethylamine salt of 2,4-D-Dichlorophenoxyacetic acid (2,4-D) as its active ingredient per the package instructions.