Answer:
Name the element: Beryllium
Number of shells: 4
Valence electrons: 2
Explanation:
I don’t really know but Yk how they are categorized by color try checking the atomic levels or some around that hope I was some type of help
<span>c. Real gases and fusion reactions </span>
Acid rain<span> is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as </span>acid rain<span>.</span>
