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 For a stubborn stump you can try a chemical stump remover or an herbicide containing glyphosate or triclopyr instead of salt. 2  While a chemical herbicide will kill the stump faster, keep in mind that it could kill the roots of surrounding trees or shrubs as well.uild a fire on top of the stump. Put scrap wood on top of the stump and use a fire starter to ignite it. As the fire burns down, the stump will catch and burn up. Look closely to make sure the stump actually catches, and add more wood as necessary to keep the fire going.