chap 7
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when explaining electron shielding what would be better sentence than “xenon atom is bigger”
larger atomic radius
Mg
.1 more (not more) .Atomic radius of Sr is smaller even though they are in the same outermost shell .greater nuclear attraction
losing the 2nd e^- from the next shell closer to the nucleus —-> so stronger nuclear attraction
draw, start with group 7 going right, period 3, going down the table?
Common Giant Structures to Remember:
Giant Ionic Structures: Sodium Chloride (NaCl) Magnesium Oxide (MgO) Giant Covalent Structures: Diamond (Carbon) Graphite (Carbon) Silicon Dioxide (SiO2) Giant Metallic Structures: Aluminium (Al) Iron (Fe) Copper (Cu)
Simple Checklist for Giant Structures:
give the 3rd ionization energy equation
X^2+(g) ——-> X^3+(g) + e^-
What 3 elements don’t form simple molecular lattices
Boron Carbon and Silicon