What are Isotopes?
10:18
How To Find The Percent Abundance of Each Isotope - Chemistry
19:33
Protons Neutrons Electrons Isotopes - Average Mass Number & Atomic Structure - Atoms vs Ions
7:56
What are Isotopes?
5:37
What staying up all night does to your brain - Anna Rothschild
31:22
Periodic Table of Elements Explained - Metals, Nonmetals, Valence Electrons, Charges
18:25
A Pergunta do SAT que Todos Erraram
5:39
Isotopes Explained in Simple Words with Real-life Examples
15:25