Which numbers are shown in the symbol for a radioactive nuclide? O the atomic number and the number of neutrons
the mass number and the number of neutrons
O the atomic number and the mass number
O the number of electrons and the number of protons

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Will give brainliest it is a lab from k12 here is the linkfor each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. type your answer here. (score for question 3: of 5 points) were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. type your answer here. (score for question 4: of 5 points) make a general statement about the reactivity of the metals in this experiment. type your answer here.

One does not belong why? ice, gold ,wood ,diamond and table salt