If you have 222 g of radioisotope with a half-life of 5 days, how much isotope would remain after 15 days? b. what percentage of a radioactive isotope would remain after four half-lives?

What happens when light is scattered?

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Select the word from the list that best fits the definition the nuclear family into which a person is born or adopted.