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.).
Instead, use the solution of salt, water and vinegar to kill grass and weeds that pop up in undesirable locations, such as sidewalks and driveways. Mix 1 cup of salt with 1 cup of boiling water and 1 cup of vinegar to create a potent weed and grass killer.pplication. Once you've mixed your solution, pour it immediately over the grass and weeds you want to kill. Making sure the water is hot is key to killing the grass and weeds quickly. Saturate the entire area, then wait about two days.