The Periodic Table Pg. 59 in spiral.

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Presentation transcript:

The Periodic Table Pg. 59 in spiral

Dmitri Mendeleev 1834 - 1907 Wrote facts about the elements on paper cards Organized cards in order of increasing atomic mass Recognized a hidden pattern in the elements

Left blank spaces for elements he predicted would be discovered & he was correct 1869 he published the 1st periodic table of the elements

The Periodic Table Contains a separate square for each element Atomic Number Symbol Name Atomic Mass 22 Ti Titanium 47.88

Using the Periodic Table to draw atoms. Spiral Pg. 61 Using the Periodic Table to draw atoms. Atomic number = # of protons Number of protons = # of electrons Atomic mass – protons = # of neutrons Energy shells; orbitals; rings 32 18 8 2 Number of electrons that can fit in each shell