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.).
1 A salt and soap combination is another effective method of controlling ivy. 2  Combine three pounds of salt with 1/4 cup of liquid soap in one gallon of water, then pour the mixture into a spray bottle or garden sprayer. 3  Apply boiling water to plant roots daily to kill ivy. A salt and soap combination is another effective method of controlling ivy. 2  Combine three pounds of salt with 1/4 cup of liquid soap in one gallon of water, then pour the mixture into a spray bottle or garden sprayer. 3  Apply boiling water to plant roots daily to kill ivy.