The Periodic Table
What are the names of the orbitals the electrons are found in.
s, p, d and f.
What is the shape of IF4-. Include a lewis diagram.
Square planar.
What is the trend for atomic radii?
It increases along and period and decreases down a group.
What state has the least kinetic energy?
Solid.
What is the most electronegative atom?
Florine
What are the type of intermolecular forces.
Temporary dipole.
Permanent dipole.
H-bonds.
Anion
What type of reaction has a negative enthalpy?
Exothermic as energy is released.
Electron configuration for Cl
1s2, 2s2, 2p6, 3s2, 3p5
What does the polarity of a molecule depend on?
-Molecule shape.
-Arrangement of bond dipoles.
Which ones have the same general trends? Ionisation energy, electronegativity, atomic radius.
Ionisation energy and electronegativity.
What is a spontaneous reaction? Give an example.
A reaction that occurs without influence. For example: Iron rusting.
What is the electron configuration for F-?
[He] 2s2, 2p6
How many different types of linear shapes are there and what is the difference between them. Draw a lewis diagram.
3. The first one has 2 bonded regions and no lone pairs. The second has 2 bonded regions and 3 lone pairs. The third has 2 bonded and 4 lone pairs.
What increases as it goes down a group.
What is Hess's law?
If the beginning and end states are the same the enthalpy changes will always be the same.
It increases.
What shapes have 5 regions of electron density? Name 3.
Trigonal bipyramidal, See-saw, T-shaped, Linear.
Why does electronegativity decrease down a group?
It decreases due to an increased distance between the nucleus and the outer shells. So there is less of an attraction for lone pairs of electrons.
What is fusion, combustion, sublimation and vaporisation?
Fusion is changing state from a solid to a liquid (melting).
Combustion is burning something in oxygen.
Sublimation is changing state from a solid to a gas.
Vaporisation is changing state from a liquid to a gas.