Topes:
- atoms of the same element that have different
numbers of neutrons, which affects the stability of the nucleus. carbon 14
is a radioactive isotope found in all living things which scientists
calculate the age of a specimen. radioactive isotopes doctors diagnose
disease, and locate and treat certain types of cancer.

Answerd. may include all of these are many definitions of bases: the  brønsted-lowry definition of acids and bases says that bases are proton acceptors.the arrhenius definition of acids and bases says that bases increase [oh⁻] in solution (thereby producing oh⁻ ions)the lewis definition of acids and bases says that bases donate electron pairs.therefore, the sensible answer is that a base may include all of the described characteristics.