Part A The most common isotope of boron is ¹¹B. Determine the total binding energy of B using information that Atomic number of B is 5, Neutron number ¹¹B is 6, and mass is 11.009305 u. Express your answer using four significant figures. ΜΕ ΑΣΦ EB= Submit Previous Answers Request Answer ? MeV

. The element zinc in nature consists of five isotopes with higher than0.5% natural abundances, with mass numbers 64, 66, 67, 68, and 70. Write the nuclear symbol for each of these isotopes. How many protons does each contain? How many neutrons does each contain?

Plutonium was detected in trace amounts in natural uranium deposits by Glenn Seaborg and his associates in 1941. They proposed that the source of this 239Pu was the capture of neutrons by 238U nuclei. Why is this plutonium not likely to have been trapped at the time the solar system formed 4.7109 years ago?