Atomic Structure.

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Presentation transcript:

Atomic Structure

Atomic Number Found on the periodic table

Atomic Mass Found on the periodic table Round to the 10ths place

Mass Number If given, rewrite If not given, round the atomic mass to the nearest whole number

Protons Atomic number on the periodic table

Neutrons Mass # - atomic # = # neutrons

Electrons Electrons have a negative charge No charge = # p+ More e- than p+ = negative charge Less e- than p+ = positive charge No charge = # p+ Negative charge = # p+ + charge Positive charge = # p+ - charge

Example Mass number N charge 15 +3 7 Atomic number

Chart N 7 14.0 15 8 (15-7) 4 (7-3) Element/Ion Atomic Number Atomic Mass Mass Number Protons Neutrons Electrons N 7 14.0 15 8 (15-7) 4 (7-3) +3 15 7

THE END!!!