PERIODIC TABLE OF ELEMENTS NOTES. Atoms vs. Ions. Atoms = same number P + & E - Ex: (+3) + (-3) = 0 charge is ZERO Ions = same # P + , …but more or less E - Ex: (+3) + (-4) = -1 Ex: (+3) + (-2) = +1 Charge is (+ or -).
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…but more or less E-
*sodium ion laser is used to determine the temperature in the mesosphere and the lower thermosphere
Periodic law: the pattern of properties within a period repeats as you move from one period to the next
In your journal, outline the periodic table and include the trends.
Goal: To settle down
Meet the OCTET RULE
Valence electrons = bonding
Alkali Gentlemen= 1 valence electron
Halogen Ladies= 7 valence electrons
OR 1 Group 6 nonmetal