Answer:
Ne-21
Explanation:
the 21 represents the mass number. since neon has 10 protons, the mass number is calculated by adding the number of neutrons to 10.
this is because mass number = protons + electrons
so 10 +11 =21
Answer:
Transparency of water relates to the depth that light will penetrate water. The change that occurs is from predominantly yellow light at the surface to blue-green at depth in clear water or yellow-green in waters having a high concentration of dissolved organic material.