Answer:
Isotopes have the same number of protons but a different number of neutrons.
Explanation:
Answer:
The value of an intensive property may vary with time and its position within the system. Examples of intensive properties include temperature, velocity, mass density, specific volume, and specific energy. An extensive property does not have a value at a point, and its value depends on the extent or size of the system.
They are about 4.5 billion years old. Hope this helps.
