Answer:
there are 3 different elements in that equation
Explanation:
Fe is the element Iron, Cr is the element Chromium, and O is oxygen
Answer:
Phosphorus, Sulfur, and Selenium are the only <u>poly</u>atomic elements.
Hydrogen, Nitrogen, Oxygen, Fluorine, Chlorine, Bromine, and Iodide are all <u>di</u>atomic elements.
4 adolescence occurs between childhood and adulthood
