Which word(s) below is represented by the word “period” on the periodic table?

a. group
b. family
c. energy level
d. valence electrons

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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so what is the problem with your lab report and whats the subject of the lab report? i will you