Answer:
Lead
Explanation:
Lead (Pb) has atomic number 82
Ex Polonium (Po) has atomic number 84 and mass number 212
The answer is D my brother
Answer:
Chloro-Flouro-Carbon
Explanation:
Chloro-Flouro-Carbon (CFC Gas) is used as a refrigerant in fridges and freezers.
Answer:
A, new substance is formed with different properties
Explanation:
Methylhexanamine<span> and its formula is C7H17N</span>
that thing is a drug
