Answer:
A. Isotope
Explanation:
For example you have Carbon 12 with 6 protons and 6 neutrons and Carbon 14 with 6 protons and 8 neutrons.
Both atoms must be non-metals,
Both atoms must have an incomplete outer energy level / shell of electrons
Answer:
i believe the grand canyon is an example
Explanation:
Answer:
3
Explanation:
the half life of a radioactive isotope is the amount of time one half of the isotope takes to decay
after 5 minutes the mass will be 24
after 10 minutes the mass will be 12
after 15 minutes the mass will be 6
after 20 minutes the mass will be 3
