3D molecules Flashcards
What is the name of the molecule bonded to 2 atoms and 0 lone pairs?
Linear
180’
What is the name of the molecule bonded to 3 atoms and 0 lone pairs?
Trigonal Planar
120’
What is the name of the molecule bonded to 4 atoms and 0 lone pairs?
Tetrahedral
109.5’
What is the name of the molecule bonded to 5 atoms and 0 lone pairs?
Trigonal Bipyramidal
120’ or 90’
What is the name of the molecule bonded to 6 atoms and 0 lone pairs?
Octahedral
90’
What is the name of the molecule bonded to 2 atoms and 2 lone pairs?
nonlinear
104.5’
Why do some shapes have certain angles, i.e why does a tetrhedral shape have 109.5’?
- Electron pairs repel
- The central atom, has __ bonding pairs and __ lone pairs
- Bonding pairs repel equally
What does polar mean in a compound?
When a compound has 2 atoms with opposite diploes
What does non polar mean in a compound?
When a compound has 2 atoms with same diploes
Define the term electronegativity.
Ability of an atom to gain a pair of electrons in a covalent bond.
Why is water a non linear molecule?
The 2 lone pairs in water have a greater repulsion pushing the bonds closer together
Describe why a molecule whether __ is polar or non polar
-__ is symmetrical/ unsymmetrical because the dipoles cancel out
-molecule is overall polar/ non polar
