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Chapter 2. In this unit we need to be familiar with this type of symbol.

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Presentation on theme: "Chapter 2. In this unit we need to be familiar with this type of symbol."— Presentation transcript:

1 Chapter 2

2 In this unit we need to be familiar with this type of symbol

3 Includes an element name a - and a number Example: Sulfur – 32 This sulfur atom has an atomic mass of 32 Since Sulfur has ______ protons & electrons It also has ______ neutrons

4 ParticleSymbolChargeMass (amu)Location Proton Neutron Electron

5 Calculate the average atomic mass of magnesium given the following information: Mg, mass = 23.98 amu; percent abundance = 78.99% Mg, mass = 24.98 amu; percent abundance = 10.00% Mg, mass = 25.98 amu; percent abundance = 11.01%

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