Which of the following best describes what happens in radioactive decay?

a. the nucleus emits particles and/or energy.

b. the electron cloud emits particles and/or energy.

c. the nucleus transfers particles and/or energy to the electron cloud.

d. the electron cloud transfers energy to the nucleus.

Determine the wavelength of the light absorbed when an electron in a hydrogen atom makes a transition from an orbital in the n=3 level to an orbital in the n=7 level.

Modern weaponry has increased the number of deaths in wars and violent conflicts.

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.