Which statement is true?: - beta radioactivity is not found until ~Z = 82 (Pb)

- beta radioactivity tends to occur in isotopes with a lower neutron to proton ratio

- fission and alpha radioactivity are more common in heavier elements (Z > 82)

- fission isn't found in heavier elements (only Z < 40).

B"hf and f-"  is the correct answer took the test on edgenuity and got it right     

The answer will be c

Those are different gas lawshere is a brief description of themcharles's law states that volume and temperature are directly proportional to each other as long as pressure is held constant.  boyle's law asserts that pressure and volume are inversely proportional to each other at fixed temperature.gay-lussac's law introduces a direct proportionality between temperature and pressure as long as it is at a constant volume.    source: