Chem 400 Periodic Table
This stable and common diatomic element has the highest atomic number
What is Iodine?
This prefix means one thousand or 1 x 10^3
What is Kilo?
What is a Ligand?
Molecules or anions with lone pairs
What is a Complex Ion?
Central metal ion bonding to surrounding molecules (ligands).
What does it mean when a reaction is in equilibrium?
Rate of forward rxn = Rate of reverse run
This noble gas gets its name from the Greek word for the sun
What is Helium?
1.23 x 10^5 has this many significant figures
What is 3?
CN-
Why do Complex Ions form?
1. Metal cation attracts lone pairs of surrounding anions/ligands.
2. They have empty d-orbitals that can be filled.
What are the 3 conditions for a reaction to reach equilibrium?
1. Closed System (constant concentrations)
2. Constant Temperature (Changes in temperature changes K)
3. Must be reversible (if not then you only have a fwd rxn)
This alkali metal's atomic symbol is the 11th letter of the alphabet
What is Potassium?
When a solid directly changes into a gas without going through a liquid phase
What is Sublimation?
What is a Bidentate Ligand?
Ligands that form two single bods with metal center.
What causes a complex ion solution to be colorful?
if K > Q, will the reaction shift forward or backwards?
Backwards.
This transition metal in the 4th period is often mistaken for the second alkaline earth metal that begins with the letter M
What is Manganese?
The atomic number of an element is equal to the number of these subatomic particles
What are Protons?
What is the charge on the metal ion in Mn(en)2Cl2? What is the Coordination number?
Mn2+
Charge 2+
Coordination # = 6 (octahedral)
If a complex ion solution emits light of Red color, what color does it absorb? What is the wavelength of that color>
Absorbs compliment of the color emitted (green). Green wavelength (490-560nm).
Consider the rxn:
2NO2(g) -->N2O4(g) + Heat
If heat is added to the rxn, in which direction will the reaction shift? Why?
Reverse Direction. Adding heat will shift to the left in order to absorb more heat and counteract the change. Creates more NO2(g).
This group of elements include Fluorine, Chlorine, Bromine, Astatine, and Tennessine
What are Halogens?
Hydrogen has this atomic mass (3 sig. figs.)
What is 1.01?
Why do Stronger Field Ligands have great Octahedral Splitting Energies?
The lone pairs from the ligand cause greater repulsion with the metal ions d-orbitals that lead to larger splitting Energies.
Explain why a d4 orbital can form both high and low spin complexes.
SFL : more paired e- because pairing energy < splitting energy which forms low spin complexes.
WFL: less paired e- because pairing energy > splitting energy which forms high spin complexes.
Given this rxn: A(g) --> B(g)
If [A] > [B], what will be the value of Kc?
A. Kc >1
B. Kc < 1
C. Idk Im just here for the pizza
B