HomeChemistry Chemistry How to Find the Mass Number in an Element? By HTuser 1 Find the element’s atomic number Find the number of protons Find the number of neutrons Add protons and neutrons together Use the formula: Mass number = protons + neutrons Share FacebookXPinterestWhatsApp Suggested for You How to Identify Chiral Centers? How to Get pH from pKa? How to Get Molecular Formula? How to Get Average Atomic Mass? How to Form an Ionic Bond? How to Find Volume in Chemistry? How to Find Valence Electron? How to Find Theoretical Yield in Chemistry? How to Find the PPM? How to Find the Number of Neutrons in an Atom? How to Find the Molarity of a Solution? How to Find the Molar Mass of an Element? How to Find the Mass Number of an Element? How to Find the Limiting Reagent? How to Find the EN of an Element? How to Find the Atomic Radius of an Atom? How to Find Solubility? How to Find Single Bond Lengths? How to Find Rate of Reaction? How to Find Rate Law? How to Find Percent of Composition? How to Find Molar Absorptivity? How to Find How Many Neutrons Are in an Atom? How to Find Electrons on Periodic Table? Load more Trending Today How To Get CIF Number? How To Reactivate My Account On Instagram? How To Animate NSFW GIFs For VRChat? How To Make Cake Balls? How To Calc Cubic Feet? How To Google Images On iPhone? Load more