WebQuestion: Teacher Thelma told her class about the element Francium which has a half -life of 22 minutes. If at a certain point container has 100 grams of this element, how much of it will remain afier 1 hour and 6 minut. ... Since, half life = 22 minute It means after 22 minutes the amount remains half. WebHalf-life is defined as the amount of time it takes a given quantity to decrease to half of its initial value. The term is most commonly used in relation to atoms undergoing radioactive decay, but can be used to …
4. Which of the following is the most stable isotope?
Webfrancium (Fr), heaviest chemical element of Group 1 (Ia) in the periodic table, the alkali metal group. It exists only in short-lived radioactive forms. Natural francium cannot be isolated in visible, weighable amounts, for … WebJan 30, 2024 · The half-life of a first-order reaction is a constant that is related to the rate constant for the reaction: t 1/2 = 0.693/ k. Radioactive decay reactions are first-order reactions. The rate of decay, or activity, of … the dark figure of hate crime underreporting
The half-life of francium is 21 minutes. Starting with 4 X 1018 …
WebSep 8, 2012 · The half-life of the least stable isotope of Francium, Francium-215, is a mere 86 nanoseconds. The half-life of the most stable isotope of Francium, Francium-223, is still only 22 minutes. WebSep 9, 2024 · Francium has no uses, having a half life of only 22 minutes. What is the most radioactive half-life? Bismuth-209 (209Bi) is the isotope of bismuth with the longest known half-life of any radioisotope that undergoes α-decay (alpha decay). It has 83 protons and a magic number of 126 neutrons, and an atomic mass of 208.9803987 amu (atomic mass ... WebJan 7, 2024 · But francium? It’s the indolent sibling that rarely shows up. The Royal Society of Chemistry puts it plainly: “Francium has no uses, having a half-life of only 22 … the dark film 2018