Chemistry Unit 2 Review

The Electron

100

What are the two directions of spin an electron can have in an orbital?

spin up & spin down

200

What is the Aufbau Principle?

electrons occupy the lowest energy orbitals first

300

What is Hund's Rule?

Each orbital in a sublevel must have 1 electron before any of the orbitals in a sublevel can have a second electron

400

DAILY DOUBLE POINTS: What is the Pauli Exclusion Principle? (two parts)

Each individual orbital may only contain up to 2 electrons. If there are 2 electrons in the same orbital, they must have opposite spins (up & down).

500

How many electrons can the 3rd energy level orbitals contain?

18 electrons: s - 2, p - 6, and d - 10

Periodic Trends

100

What are the 3 periodic trends?

Atomic Radius, Ionization Energy, and Electronegativity

200

List the following in order of increasing Ionization Energy:

Aluminum, Sulfur, and Magnesium

Magnesium, Aluminum, and Sulfur

300

List the following elements in order of increasing Electronegativity:

Bromine, Fluorine, and Antimony

Antimony, Bromine, and Fluorine

400

How many valence electrons do the elements in Group 2 have?

2 valence electrons

500

List the following elements in order of increasing atomic radius:

Tin, Chlorine, Strontium

Chlorine, Tin, Strontium

The "Table"

100

Which of these is an Alkali Metal?

Iron, Bromine, Potassium, Sulfur, Copper

Potassium

200

Elements on the periodic table are arranged due to their:
1. similarity in size
2. similarity in date of discovery
3. similarity in properties

Similarity in Properties

300

Which of the following elements is in the same period as Potassium?

Sodium, Calcium, Chlorine, or Hydrogen

Calcium

400

Who developed the Periodic Table based on Atomic Mass?

Mendeleev

500

Where do the Lanthanides and Actinides fit on the periodic table?

Between the Alkaline Earth Metals and the Transition Metals - in periods 6 and 7

Electron Configuration

100

The 4 types of subshells/orbitals

s, p, d, and f?

200

DAILY DOUBLE POINTS: The electron configuration for Arsenic (As)

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p³

300

How many electrons can each subshell hold?

s: 2

p: 6

d: 10

f: 14

400

What is the Noble Gas configuration (short-hand) for Iodine (I)?

[Kr]5s²4d¹⁰5p⁵

500

What is the electron configuration for Copper?

1s²2s²2p⁶3s²3p⁶4s¹3d¹⁰

Miscellaneous

100

The negatively charged particle in an atom

What is an electron?

200

What is the molar mass of Strontium (Sr)? Include units

87.62 g/mol

300

How many sig figs are in the number 450.00

5

400

How many atoms are in 1 mol of C? Include units

6.02 x 10²³ atoms of C

500

How many grams of Sulfur (S) are in 3 mol of S? Include units

96 g of S