Question

1.You’re working with an intense beta-emitting isotope in your research lab. Which of the following would be a good choice for shielding yourself from the radiation? (5 pts) a. No shielding is necessary, beta particles can’t penetrate skin

b. 1 cm of aluminum

c. 10 cm of lead shielding

2Indicate if the statements below are true or false:

(a) The most penetrating form of radiation is alpha radiation.

(b) The mass of the nucleus is less than the sum of the individual proton and neutron masses that makeup the nucleus.

(c) Isotopes with the same atomic number Z but different mass number A have different chemical properties.

(d) Einstein’s equation E=mc2 tells us that matter can become energy, and energy can become matter.

(e) The most strongly bound nucleus found in nature is 238U.

Answer 1

Good choice n shield leca alx ich Chemieol false Ce he mesta gly mm.oshabke sPe S6