Radium-226 is radioactive and has a half life of 1600. years. Calculate the activity of a 5.2 mg sample of radium-226. Give your answer in becquerels and in
curies. Be sure your answer has the correct number of significant digits.

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

it is the most commonly accepted one

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8