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Spaced Repetition

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48 Terms
😃 Not studied yet (48)
Is equal to the number of protons of an element
Is the identifying number on the periodic table
Is the weighted average of the mass of the isotopes for an element
Is the decimal number on the periodic table
4 amu in mass
+2 in charge
Very Low Penetration
No Biological Hazard unless inhaled
Equivalent to a helium 4-nucleus
Emitted during Radioactive decay
0 amu in mass
-1 Charge 
Low Penetration
Biological Hazard to skin and eyes
Very Fast
Emitted during Radioactive Decay
0 Mass
0 Charge
Very High Penetration
Biological Hazard to whole body; causes mutations
Accounts for most of the energy lost during radioactive decay
Does not add or subtract to the number of protons, neutrons, and electrons.
A particle made of 2 protons and 2 neutrons is ejected from the nucleus. Essentially subtracts 2 protons and 2 neutrons form an element.
A neutron is broken down into a proton and a beta particle (which is essentially an electron) and the beta particle is ejected from the nucleus at high speeds. The original Neutron becomes a proton and changes the atomic number. Essentially subtracts a proton from an element.
The nucleus has too much energy and releases them as electromagnetic waves.
A form of electromagnetic energy that has no mass