Covalent Compounds, Formulas, And Struture Flashcards
Paramagnetic
Substances that have unpaired electrons
Octet rule
Noble gas configuration will be achieved if the Lewis structure shows right electrons around each atom
Diamagnetic
Substances that have all their e- paired and have very small magnetic fields
Paramagnetic substances are attracted towards
An external magnet
Formal charge
The difference between the number of e- an atom has in a Lewis structure and the number if valence e-
Formal charge is used to
Evaluate the validity of a Lewis structure
Elements with a greater electronegativity will form atoms with a ______ charge
Negitive
Calculate formal charge
Valence e- - [Number of nonbonding e- + .5(number of bonding e-)]
A Lewis structure is most accurate when formal charge is equal to
0
What symbol indicates resonance structures
Resonance structure
Lewis structures that are completely equivalent
What is a polar atom
An atom with a positive an negative end as a result of a covenant bond
Partially positive polarities are found
Towards the lower left of the periodic table
Calculate the magnitude of bond polarity
Albsolute value of the difference in the electronegativity of the 2 atoms
VAEPR theory
States that electron pairs will repel each other since all electrons carry a negative charge
When delta EN is greater than 1.7 the bond is
Ionic
When delta is less than 1.7 the bond is
Covenant
When delta EN is zero the bond is
Non polar covenant
Bond order is equal to
Total bonds/ bonds on central atom
AX shape is
Linear
AX2 shape
Linear
AX3 shape
Planar triangle
AX4 shape
Tetrahedron
AX5 shape
Trigonal bipyramid
