Polarity
These are the conditions for polarity.
These elements make ionic bonds.
What are metals + non-metals.
The definition of electronegativity
What is: the ability of an atom to attract an electron to itself.
These elements make covalent bonds.
What are non-metals and non-metals.
The direction of the dipole arrow.
Metals are located here on the periodic table.
Below and to the LEFT of the metalloids (staircase).
The directionality of INCREASING electronegativity trends.
What is: increases from bottom to top & increases from left to right.
The range for a covalent bond AND a polar covalent bond.
What are <0.4 and 0.4 - 1.8
This holds ionic bonds together.
What is electrostatic attraction.
The definition of atomic radius.
The name for a covalent molecule with TWO atoms (Hint: can be two of the same or two different)
A dipole is a ___ quantity. (Scalar or vector)
What is a vector quantity.
This GROUP makes +2 cations. This group makes -1 anions.
What are the alkaline earth metals and the halogens.
What are ionic compounds. Why -- because their ions are free to move around in water.
What are: shared between elements.
True or false: S & O make a polar bond.
TRUE; Their EN is < 0.4 and < 1.8.
S = 2.58; O = 3.44; EN difference = 0.86
The final charges of ionic bonds?
What is neutral
The reason the atomic radius increased from R to L and from Top to Bottom.
Because more shells are added with each PERIOD. Because there is a stronger positive pull in the nucleus with more protons (+ charge).
The STEPS for making a Lewis structure (simplified).