Question

Symbol atomic number and atomic mass in science

Answer 1

Answer:

Here is your answer in picture

Answer 2

Answer:

Explanation:

By definition, an atom of carbon with six neutrons, carbon-12, has an atomic mass of 12 amu. ... At the upper left is the atomic number, or number of protons. In the middle is the letter symbol for the element (e.g., H). Below is the relative atomic mass, as calculated for the isotopes found naturally on Earth.