Atoms, Ions, & Isotopes

pg. 99-103 & 108-113

LO: I can explain the number of protons, electrons, neutrons & overall charge for any

element or isotope.

Subatomic Particles

Element Symbols

Element Symbols

Element Symbol

Element Name

Element Mass (A)(protons + neutrons)

Unit = amu

Atomic Number (Z)

Electron Configuration

Number of protons &

electrons in a neutral atom

Atomic Number (Z)

Mass Number (A)

Ions: Charged Particles

Particles become charged when…

They gain or lose an electron

The overall charge of an element or compound is…

ion charge =# of protons - # electrons

Ions: Charged Particles

Ions: Charged ParticlesMagnesium

Sulfur

Iron

Elements that form predictable ions

Cations = Positive ionsAnions = Negative ions

IsotopesAn isotope is…

A version of an element having a different number

of neutrons.

Isotope Notation

Periodic Table

IsotopesAn isotope has…

The same chemical properties as neutral

element in PT.

Isotopes

Percent abundant

Two Ways to Represent Isotopes

Tell us all about it…How many?

Protons = _______

Electrons = _______

Neutrons = _______

Charge = ________

Mass = ________

Isotope name:

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