Lecture 4 - The Periodic Table and Electron Configurations

Wednesday, January 17, 2024

8:53 PM

Welcome back to CHEM 101

"Refrain from illusions, insist on work and not on words. Patiently search divine and scientific truth" - Maria Dmitrievna Kornileva's last words to her son Dmitri Mendeleev after they walked 1700 miles from Siberia on foot to St. Petersburg to help him enter a science training program.
﷟HYPERLINK "https://boisestatecanvas.instructure.com/courses/28698/discussion_topics/653846"This week's overview
Assignments this week:
﷟HYPERLINK "https://boisestatecanvas.instructure.com/courses/28698/assignments/984054"HW 2 (1.5-1.6) on Aktiv Chemistry due tomorrow Friday. Covers properties of matter and energy. 
No reading quiz on 1.5-1.6
﷟HYPERLINK "https://boisestatecanvas.instructure.com/courses/28698/assignments/984555"Reading quiz on 2.1-2.2 due tomorrow Friday.
﷟HYPERLINK "https://boisestatecanvas.instructure.com/courses/28698/assignments/984618"HW 3 (2.1-2.2) on Aktiv Chemistry due this Sunday. Wednesday (1/24) Covers periodic table, electron configurations, and valence electrons
﷟HYPERLINK "https://boisestatecanvas.instructure.com/courses/28698/assignments/984055"Activity 1 (Elemental Exploration: A Personal Journey through the Periodic Table).
Write-up by next week Wednesday (1/24)
Peer reviews due next Sunday (1/28).
Office Hours: 
Friday 11-1 CIC 
﷟HYPERLINK "https://calendly.com/bricejurban/office-hours"By appointment
Today's (1/18) Schedule:
The Periodic Table (history & modern)
Electron configurations (complete & condensed)
Valence electrons
Looking Ahead
Tuesday (1/23) Schedule:
Ions
Lewis Dot Diagrams
Periodic Properties (radius, ionization)
Thursday (1/25) Schedule:
Share our research of the elements 
Review of Chapters 1 and 2
Chemical Formulas
Tuesday (1/30) Schedule
Midterm 1 (in-class) chapters 1 and 2

Engagement
Alkali metals
Untitled picture.png 3 
Lithium 
6.941 
11 
Na 
Sodium 
22.989768 
19 
Potassium 
39.0983 
37 
Rubidium 
85.4678 
55 
Celsium 
132.90543 
87 
Francium 
223.0197 
﷟HYPERLINK "https://youtu.be/6ZY6d6jrq-0?si=_D9C7RDuiCSJPMbe"Alkali metals in water - Chemical elements: properties and reactions (1/8)
OpenLearn from The Open University

Alkali metals in water - Chemical elements: properties and reactions (1/8) Press enter to activate
Untitled picture.png 3 
Lithium 
6.941 
11 
Na 
Sodium 
22.989768 
19 
Potassium 
39.0983 
37 
Rubidium 
85.4678 
55 
Celsium 
132.90543 
87 
Francium 
223.0197 

Alkali metals in water - Chemical elements: properties and reactions (1/8) Press enter to activate

Halogens
Untitled picture.png Fluorine 
18.998403 
Chlorine 
351527 
Bromine 
79.901 
lodine 
126.90447 
Astatine 
209.9871 
τς 
Tennessine 

﷟HYPERLINK "https://youtu.be/u2ogMUDBaf4?si=6NKW_znQm6FA4SY6"Comparing the four halogens - Chemical elements: properties and reactions (2/8)
OpenLearn from The Open University

Comparing the four halogens - Chemical elements: properties and reactions (2/8) Press enter to activate

Noble Gases
Untitled picture.png 4,002602 
37,948 
83.798 
ΙΙΙβ4Ι 
Xenon 
131.293 
Radon 
Og 
Oganesson 

﷟HYPERLINK "https://youtube.com/playlist?list=PLLnAFJxOjzZsj3KJg-6EqTunw6yxRRcd7&si=w1D5Te956amUed5r"The Chemistry of Light - Peter Wothers Lecture
Royal Society Of Chemistry
Link to Full Video
﷟HYPERLINK "https://www.youtube.com/watch?v=nXyvVVn360Y&list=PLLnAFJxOjzZsj3KJg-6EqTunw6yxRRcd7&index=18"The Chemistry of Light 18 - Colours of the Noble Gases

The Chemistry of Light 18 - Colours of the Noble Gases Press enter to activate

Exploration
yuán sù zhōu qī biǎo
简体字:5K元素周期表.png 元 素 周 期 表 
图 例 
中 文 
English 
Periodic Table of Elements 
。 氧 F 氟 
有 体 
N 氮 
三 
硼 
佣 n 00n M 翩 
13 
1 22 
24 的 
035 15 
生 》 彐 74 № 
32 ℃ 17 弱 45 旧 
3 , 
P 磷 
s 硫 氯 
9 驸 09 , 岡 
4D0 
还 4 阝 
还 7 里 7 , 94a 51 9 凸 国 
到 糾 5 
甜 93J 翮 
5 09J 馮 
6 , 糾 昼 30 33 31 
》 3 盟 
们 1 33 
, 9 
, 9 门 3 , 9 
" 钛 v 钒 铬 锰 
伽 铜 “ 锌 
“ 硒 溴 
钾 
到 39 
8 & 阕 6 40 
脚 。 4 4 《 盟 。 42 , 9 、 43 》 44 
1D1 45 
, 舡 46 
42 
加 铲 112 4 49 
114 脚 
, 1 & 0 51 , 丿 12 铲 E 53 1 又 131. 
锆 Nb 铌 
MO 钼 讹 锝 
铑 炻 钯 
鮞 银 Cd 镉 铟 
5 。 锡 sb 锑 碲 《 碘 氙 
132 5 % 
13r327 
0 , 40 门 1 , 1 8 
1 凸 1 柄 07 
1 龙 3 
, 92 1 了 1g5 翮 5 
1 % 80 到 2 81 3 
7.2 83 , 0 膶 20 , 2 2 叫 7 1 
钡 镧 系 緔 铪 钽 
“ 钨 铼 
@ 铱 铂 
№ 全 汞 1 《 铊 
Pb 铅 
& 铋 钋 ' At 砹 Rn 氡 
铯 
, 04 57 》 5 6 105 [26 1 〔 1 《 腼 到 1 《 27 110 《 1 ] 111 《 112 《 25 1 们 《 2 ] 114 《 2 015 0 《 2930 018 《 
7 223 ℃ 20 
225 冫 5 
镭 锕 系 緔 栌 
钫 
Nd 钕 
镝 № 钬 。 铒 铥 镱 “ 镥 
227 刃 25 9 ] 
23z03 吕 91 
23 上 035 92 
233 24 
冫 " 43 
241 ℃ 61 
243031 
247 ℃ " 
2 , O 5 | 阢 57 刃 , 01 2580 102 25g 103 
。 锎 “ 锿 Fm 镄 “ 钔 “ 锘 “ 铹
简体字:5K元素周期表.png 元 素 周 期 表 
图 例 
中 文 
English 
Periodic Table of Elements 
。 氧 F 氟 
有 体 
N 氮 
三 
硼 
佣 n 00n M 翩 
13 
1 22 
24 的 
035 15 
生 》 彐 74 № 
32 ℃ 17 弱 45 旧 
3 , 
P 磷 
s 硫 氯 
9 驸 09 , 岡 
4D0 
还 4 阝 
还 7 里 7 , 94a 51 9 凸 国 
到 糾 5 
甜 93J 翮 
5 09J 馮 
6 , 糾 昼 30 33 31 
》 3 盟 
们 1 33 
, 9 
, 9 门 3 , 9 
" 钛 v 钒 铬 锰 
伽 铜 “ 锌 
“ 硒 溴 
钾 
到 39 
8 & 阕 6 40 
脚 。 4 4 《 盟 。 42 , 9 、 43 》 44 
1D1 45 
, 舡 46 
42 
加 铲 112 4 49 
114 脚 
, 1 & 0 51 , 丿 12 铲 E 53 1 又 131. 
锆 Nb 铌 
MO 钼 讹 锝 
铑 炻 钯 
鮞 银 Cd 镉 铟 
5 。 锡 sb 锑 碲 《 碘 氙 
132 5 % 
13r327 
0 , 40 门 1 , 1 8 
1 凸 1 柄 07 
1 龙 3 
, 92 1 了 1g5 翮 5 
1 % 80 到 2 81 3 
7.2 83 , 0 膶 20 , 2 2 叫 7 1 
钡 镧 系 緔 铪 钽 
“ 钨 铼 
@ 铱 铂 
№ 全 汞 1 《 铊 
Pb 铅 
& 铋 钋 ' At 砹 Rn 氡 
铯 
, 04 57 》 5 6 105 [26 1 〔 1 《 腼 到 1 《 27 110 《 1 ] 111 《 112 《 25 1 们 《 2 ] 114 《 2 015 0 《 2930 018 《 
7 223 ℃ 20 
225 冫 5 
镭 锕 系 緔 栌 
钫 
Nd 钕 
镝 № 钬 。 铒 铥 镱 “ 镥 
227 刃 25 9 ] 
23z03 吕 91 
23 上 035 92 
233 24 
冫 " 43 
241 ℃ 61 
243031 
247 ℃ " 
2 , O 5 | 阢 57 刃 , 01 2580 102 25g 103 
。 锎 “ 锿 Fm 镄 “ 钔 “ 锘 “ 铹 

固 (gù) - Solid
金 (jīn) - Metal (or gold)
石 (shí) - Stone
液 (yè) - Liquid
水 (shuǐ) - Water

气 (qì) - Gas


Can you find examples of solids, liquids, and gases using these Chinese characters and radicals?
 
 

How many metals can you find? 
 


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 What do you notice about the Organization of the Periodic Table?
e.g. where are the metals grouped?
 
 

What do you notice about elements in similar columns?


              
﷟HYPERLINK "https://www.reddit.com/r/ChineseLanguage/comments/mhte8s/i_made_a_chineseenglish_bilingual_periodic_table/"Image Credit 
Here are some representative elements and there approximate meaning. If you speak Chinese natively and have any insight please let me know!
Oxygen - 氧 (yǎng)
Oxygen is a fundamental gas (气) for life, much like how sheep (羊) have been essential animals in many cultures.
Carbon - 碳 (tàn)
The character 碳 includes the radical for stone (石), reflecting the solid form of elemental carbon, and "炭" (tàn) means charcoal, which is primarily carbon.
Hydrogen - 氢 (qīng)
Hydrogen is a gas (气) and has the phonetic component "工" (gōng), which also means work or labor. Hydrogen generates water when combined with oxygen.
Bromine - 溴 (xiù)
Bromine is a liquid 水" (shuǐ) at room temperature and has a strong odor (臭 (xiù) means stink)
Explanation

Untitled picture.png The Periodic Table of the Elements is arranged by increasing number of 
protons (the atomic number). 
In 1882 Dmitri Mendeleev organized the known elements into a table based on 
similar properties. He left empty spaces in the table for elements that would 
eventually be discovered. Element 101 is named in his honor 
Rows: "Periods" or "Shells" 
Columns: "Groups" or "Families" 
Elements in the same group form similar ions and have similar chemical properties 
Typical 
Properties 
States at 
Standard 
Conditions 
(25 oc, 1 atm) 
Categories 
Metals 
Gas: 
Liquid: 
Solid: 
Alkali Metals 
OAlkaline Ealth Metals 
O Transition Metals 
Non-Metais 
Olnner-Transition 
Metals 
00ther Metals 
O(Semi-Metals) 
Gas: Liquid: 
Solid: 
OHydrogen 
ONoble Gases 
O Halogens 
O Other Non-Metals 
5
Untitled picture.png The Periodic Table of the Elements is arranged by increasing number of 
protons (the atomic number). 
In 1882 Dmitri Mendeleev organized the known elements into a table based on 
similar properties. He left empty spaces in the table for elements that would 
eventually be discovered. Element 101 is named in his honor 
Rows: "Periods" or "Shells" 
Columns: "Groups" or "Families" 
Elements in the same group form similar ions and have similar chemical properties 
Typical 
Properties 
States at 
Standard 
Conditions 
(25 oc, 1 atm) 
Categories 
Metals 
Gas: 
Liquid: 
Solid: 
Alkali Metals 
OAlkaline Ealth Metals 
O Transition Metals 
Non-Metais 
Olnner-Transition 
Metals 
00ther Metals 
O(Semi-Metals) 
Gas: Liquid: 
Solid: 
OHydrogen 
ONoble Gases 
O Halogens 
O Other Non-Metals 
5 



Untitled picture.png PERIODIC TABLE OF THE ELEMENTS 
18 
1.008 2 
*Lanthanoids 
tActinoids 
13 
10 11 
12 
In 
14 
12.01 
Sn 
15 
14.01 
15 
30.97 
16 17 
161K) 
16 
32.06 
34 
78.97 
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Untitled picture.png PERIODIC TABLE OF THE ELEMENTS 
18 
1.008 2 
*Lanthanoids 
tActinoids 
13 
10 11 
12 
In 
14 
12.01 
Sn 
15 
14.01 
15 
30.97 
16 17 
161K) 
16 
32.06 
34 
78.97 

Elaboration: What causes this periodicity?
Its due to the electrons and how they are arranged in atomic orbitals
Untitled picture.emf Bohr Model (1913) 
Niels Bohr proposed that the electrons orbi ted the nucleus at 
specific, dscrete (quantized) energy levels (n = 1 
As electrons are excited, they jump to 
higher energy levels. 
WIIen electrons relax to lower energy levels 
they ennt light with energy equal to the 
(Efference between the energy I evels 
Electron Shells: 
Pruna1Y energy levels occupied by electrons 
Each shell can only hold a catam number of electrons 
• one is filled up, electrons occupy the next shell 
The higher the shell the fulther the electron is from the nucleus 
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Untitled picture.emf Bohr Model (1913) 
Niels Bohr proposed that the electrons orbi ted the nucleus at 
specific, dscrete (quantized) energy levels (n = 1 
As electrons are excited, they jump to 
higher energy levels. 
WIIen electrons relax to lower energy levels 
they ennt light with energy equal to the 
(Efference between the energy I evels 
Electron Shells: 
Pruna1Y energy levels occupied by electrons 
Each shell can only hold a catam number of electrons 
• one is filled up, electrons occupy the next shell 
The higher the shell the fulther the electron is from the nucleus 

Untitled picture.emf Heisenberg Uncertainty Principle (1927) 
(Ax) (AP) 
Ille exact position (x) and momentum4: (p) of an electron cannot be Imown 
Electrons don't follow circular orbits, but can actually be found ANYWHERE 
Ille most probable locations ofthe electron can be thought of as an electron cloud 
Elwin Schrödinger detennmed that electrons don't have circular orbits 
like in the Bohr model, but occupy atom c orbitals 
o 
Atomic Orbitals are regions of space where 
electrons are likely to be found 
waiter White 
'Heisenberg" 
p = mv 
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Untitled picture.emf Heisenberg Uncertainty Principle (1927) 
(Ax) (AP) 
Ille exact position (x) and momentum4: (p) of an electron cannot be Imown 
Electrons don't follow circular orbits, but can actually be found ANYWHERE 
Ille most probable locations ofthe electron can be thought of as an electron cloud 
Elwin Schrödinger detennmed that electrons don't have circular orbits 
like in the Bohr model, but occupy atom c orbitals 
o 
Atomic Orbitals are regions of space where 
electrons are likely to be found 
waiter White 
'Heisenberg" 
p = mv 

s-subshell

Untitled picture.emf 

p-subshell
Untitled picture.emf 

d-subshell
Untitled picture.emf 월寸寸§넣화 

f-subshell
Untitled picture.emf |전立寸*鞏§4宖| 
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Untitled picture.emf |전立寸*鞏§4宖| 

Elaboration: What orbitals do electrons fill first?
What are the rules?
Every electron shell has different subshells

Each sublevel (s, p, d, and f) has slightly different energies

Each sublevel can be divided into individual orbitals

Each orbital can hold a maximum of two electrons (Pauli Exclusion Principle)
Electron Shell
Subshell
Orbitals in that Subshell
Total Orbitals in that Shell
Total electrons in that Shell
n = 1
1s
1
1

2

n = 2
2s
1
4
8


2p
3


n = 3
3s
1
9

18


3p
3



3d
5


n = 4 
4s
1
16
32
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n = 4 
4s
1
16

32

4p
3



4d
5



4f
7




Untitled picture.png Energy of Atomic Orbitals (A 
7006000000000000 
6000b0000boocooo 
6s 
500000000 
0000000 
36000 
Is 
Aufbau Principle  (building up)
Lowest energy orbitals fill up first
Pauli Exclusion Principle
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Pauli Exclusion Principle
Maximum of two electrons per Atomic orbital (AO)
Hund's Rule
Fill up empty orbitals of same energy first
All electrons should be same spin up first

Untitled picture.png Here's a trick to filling orbitals: Use the periodic table to predict the electron 
configuration of an atom or ion. 
s block 
p block 
d block 
f block 


Core Electrons
Inner electrons. We abbreviate these in short form by the noble gas.
Valence Electrons
Electrons in the highest energy electron shell. These are involved with bonding and determine chemical properties
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Valence Electrons
Electrons in the highest energy electron shell. These are involved with bonding and determine chemical properties



Elaboration: What notation is used to indicate the electrons in an atom
Electron Configuration Notation
Hydrogen

Untitled picture.png Is 

Long Form:




# of Protons:


# of Total Electrons:


# of Valence Electrons:
Oxygen
Untitled picture.png Is 

Long Form:





Short Form:
# of Protons:


# of Total Electrons:


# of Core electrons: 


# of Valence Electrons:
Silicon 
Untitled picture.png XOCQD 
Is 
Long Form:





Short Form:


# of Protons:


# of Total Electrons:


# of Core electrons: 


# of Valence Electrons:

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We will continue this on Tuesday!

 

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