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Nuclear Chemistry

Puzzle Type: Educational
Nuclear Chemistry: Hostetter
Across
The time needed for 75% of the nuclei of an isotope to decay
Can be stopped by a piece of aluminum
Similar to a helium nucleus with a charge of +2
New element formed from the alpha decay or uranium 239
Atoms with the same atomic number but different numbers of neutrons
Specific atomic number of an isotope
The amount of time for a radioactive elemnt to lose half of its mass
Down
Electromagnetic rays
Number of protons and nuetrons
Neutron turns into a proton and emits and electron from the nucleus
The half lives required for seven-eighths of a the nuclei of an isotope to decayto decay
Attractive force between protons and neutrons in the nucleus