Valence e-
In VSEPR Theory, the valence electrons are in one of these
a shell
A tetrahedron has this many faces
4
CCSI
Covenant Community School International
NaCl
Sodium chloride - common table salt
This periodic property decreases as you go across a row of the chart
atomic radius
Electrons do this to each other
repel each other
In a tetrahedral molecule, the central atom is located here with respect to the tetrahedron
center of the tetrahedron
CPCTC
Corresponding Parts of Congruent Triangles are Congruent
BaS
Barium sulfide
(Just two elements hanging out as an ionic compound)
There are 5 of them in 0.090120
significant figures
Carbon has this many valence electrons
4
In a tetrahedral molecule, the atoms that are attached to the central atom are located here with respect to the tetrahedron
the vertices
VSEPR
Valence Shell Electron Pair Repulsion
NH4OH
Ammonium hydroxide
(Enter the polyatomics!)
Coke is an example of this kind of matter
a homogeneous mixture
Neon has this many valence electrons
8
That perfect octet!
The bond angles are sometimes squeezed down to 105° because of this
two pairs of un-bonded electrons?
Roy G. Biv
red orange yellow green blue indigo violet
(The visible light spectrum)
SF6
Sulfur hexa-fluoride
(Surely you remember how to recognize and name covalent compounds!!)
He is the guy who discovered electrons
JJ Thompson
A covalent bond is not as repulsive as this
an unbonded pair of electrons
This relatively flat shape based on the tetrahedron can result if there is one double bond
trigonal shape
amu
Atomic Mass Units
CuCl2
Copper (II) chloride
(Gotta say "Copper-2" because copper is one of those squirrely transition metals!)
This is the most electronegative element in the world
fluorine