This is not easy. For many of the chemical elements there are several known isotopes. Isotopes are atoms with different atomic masses which have the same atomic number. The atoms of different isotopes are atoms of the same chemical element; they differ in the number of neutrons in the nucleus.
Answer:
- start by recycling the question
- explain the topic using key words related to that topic
- include a few examples/data if it's using a graph/photo
Like A B C D or like a mailed letter
Degree celsius is not an official si unit of measure.
