Exam 1 Review: CHEM 1201

Electron Configuration

100

copper

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4s¹

200

Zirconium

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰4p⁶5s²4d²

300

Chlorine (abbreviated)

[Ne] 3s²3p⁵

400

[Xe] 6s² 4f¹⁴5d¹⁰6p²

Lead

500

1s² 2s² 2p⁶ 3s¹

Sodium

P.E.N

100

Phosphorus (P)

Mass number:31

• Protons: 15

• Electrons: 15

• Neutrons: 31 - 15 = 16

200

Zinc (Zn)

Mass number: 65

• Protons: 30

• Electrons: 30

• Neutrons: 65 - 30 = 35

300

Aluminum ion (Al³⁺)

Mass number:27

• Protons: 13

• Electrons: 10 

• Neutrons: 27 - 13 = 14

400

Copper(II) ion (Cu²⁺)

Mass number: 64

• Protons: 29

• Electrons: 27 

• Neutrons: 64 - 29 = 35

500

Iodide ion (I⁻)

Mass number:127

• Protons: 53

• Electrons: 54 

• Neutrons: 127 - 53 = 74

Isotopes

100

An element has two isotopes:

• Isotope A has a mass of 10.012 amu and an abundance of 19.9%.

• Isotope B has a mass of 11.009 amu and an abundance of 80.1%.

Calculate the molar mass of this element.

10.81 amu

200

Chlorine has two main isotopes:

• Chlorine-35 with a mass of 34.969 amu and 75.77% abundance.

• Chlorine-37 with a mass of 36.966 amu and 24.23% abundance.

Find the average molar mass of chlorine.

35.45 amu

300

An element has three isotopes:

• Isotope X with a mass of 196.967 amu and an abundance of 32.9%.

• Isotope Y with a mass of 198.968 amu and an abundance of 25.5%.

• Isotope Z with a mass of 199.968 amu and an abundance of 41.6%.

Calculate the molar mass of this element.

198.73 amu

400

An element exists as two isotopes:

• Isotope A with a mass of 58.933 amu and 68.1% abundance.

• Isotope B with a mass of 60.933 amu and 31.9% abundance.

Calculate the molar mass of the element.

59.56 amu

500

An element has two isotopes:

• Isotope 1 with a mass of 6.015 amu and 7.5% abundance.

• Isotope 2 with a mass of 7.016 amu and 92.5% abundance.

What is the average molar mass?

6.94 amu

Periodic Table

100

Group 1: All Element Symbols

H, Li, Na, K, Rb, Cs, Fr

200

What is name of Group 2?

Alkaline Earth Metals

300

Description of Chalcogens

Non-metals that form two bonds with most other atoms

400

What are noble Gases

Stable elements found in nature as gases.

500

What is group 17/7?

Halogens

RANDOM

100

How many valence electrons in Cl?

7 ve-

200

What is the arrow trend for ionization energy on the periodic table?

300

Which gains electrons and which loses electrons? 

Metals: lose electrons

Nonmetals: gain electrons

400

How many electrons when n = 4?

32 electrons

500

What is Dalton's Atomic Theory?

1. Matter is made up of atoms
2. Atoms cannot be created or destroyed (law of conservation of matter)
3. Atoms of the same element are alike
4. Atoms of different elements are different
5. A chemical reaction involves union or separation of atoms