wake-up a.refer to element below. name the element. b.how many protons, neutrons, and electrons?...
DESCRIPTION
Electrons are important… Because they feel each other first when atoms meet. Outer electrons of atoms interact with other electrons first!TRANSCRIPT
![Page 1: Wake-up a.Refer to element below. Name the element. b.How many protons, neutrons, and electrons? c.Naturally occurring Europium consists of two isotopes](https://reader033.vdocument.in/reader033/viewer/2022060206/5a4d1b947f8b9ab0599c2e0a/html5/thumbnails/1.jpg)
Wake-up
a. Refer to element below. Name the element.b. How many protons, neutrons, and
electrons?c. Naturally occurring Europium consists of
two isotopes with a mass of 160 and 161. If Eu-160 has abundance 49% and Eu-161 has 145%. What is the average atomic mass of Eu?
![Page 2: Wake-up a.Refer to element below. Name the element. b.How many protons, neutrons, and electrons? c.Naturally occurring Europium consists of two isotopes](https://reader033.vdocument.in/reader033/viewer/2022060206/5a4d1b947f8b9ab0599c2e0a/html5/thumbnails/2.jpg)
Electron Configuration … Where are electrons found?
![Page 3: Wake-up a.Refer to element below. Name the element. b.How many protons, neutrons, and electrons? c.Naturally occurring Europium consists of two isotopes](https://reader033.vdocument.in/reader033/viewer/2022060206/5a4d1b947f8b9ab0599c2e0a/html5/thumbnails/3.jpg)
Electrons are important…Because they feel each other first when atoms meet
.
Outer electrons of atoms interact with other electrons first!
![Page 4: Wake-up a.Refer to element below. Name the element. b.How many protons, neutrons, and electrons? c.Naturally occurring Europium consists of two isotopes](https://reader033.vdocument.in/reader033/viewer/2022060206/5a4d1b947f8b9ab0599c2e0a/html5/thumbnails/4.jpg)
Neils Bohr: 1913• Electrons move in orbitals around nucleus• AKA Planetary Model• Each orbital holds a certain number of electrons
with increasing energy
![Page 5: Wake-up a.Refer to element below. Name the element. b.How many protons, neutrons, and electrons? c.Naturally occurring Europium consists of two isotopes](https://reader033.vdocument.in/reader033/viewer/2022060206/5a4d1b947f8b9ab0599c2e0a/html5/thumbnails/5.jpg)
Electron Energy Levels1st Energy Level (surrounding the nucleus) contains
2 electrons
2 electrons
![Page 6: Wake-up a.Refer to element below. Name the element. b.How many protons, neutrons, and electrons? c.Naturally occurring Europium consists of two isotopes](https://reader033.vdocument.in/reader033/viewer/2022060206/5a4d1b947f8b9ab0599c2e0a/html5/thumbnails/6.jpg)
Electron Energy Levels2nd Energy Level (surrounding the nucleus)
contains 8 electrons
8 electrons
![Page 7: Wake-up a.Refer to element below. Name the element. b.How many protons, neutrons, and electrons? c.Naturally occurring Europium consists of two isotopes](https://reader033.vdocument.in/reader033/viewer/2022060206/5a4d1b947f8b9ab0599c2e0a/html5/thumbnails/7.jpg)
Electron Energy Levels3rd Energy Level (surrounding the nucleus)
contains 18 electrons• BUT if not enough to fill 18 and enough to fill 8,
fill 8 and move to next energy level.
18 electrons (8e-)
![Page 8: Wake-up a.Refer to element below. Name the element. b.How many protons, neutrons, and electrons? c.Naturally occurring Europium consists of two isotopes](https://reader033.vdocument.in/reader033/viewer/2022060206/5a4d1b947f8b9ab0599c2e0a/html5/thumbnails/8.jpg)
Electron Energy Levels4th Energy Level (surrounding the nucleus)
contains 32 electrons
32 electrons
![Page 9: Wake-up a.Refer to element below. Name the element. b.How many protons, neutrons, and electrons? c.Naturally occurring Europium consists of two isotopes](https://reader033.vdocument.in/reader033/viewer/2022060206/5a4d1b947f8b9ab0599c2e0a/html5/thumbnails/9.jpg)
How to Complete a Bohr Ring ModelFind the number of electrons; start filling the
energy levels starting with the 1st and working way out
![Page 10: Wake-up a.Refer to element below. Name the element. b.How many protons, neutrons, and electrons? c.Naturally occurring Europium consists of two isotopes](https://reader033.vdocument.in/reader033/viewer/2022060206/5a4d1b947f8b9ab0599c2e0a/html5/thumbnails/10.jpg)
Example #1: SodiumHow many electrons does Sodium have?
11
![Page 11: Wake-up a.Refer to element below. Name the element. b.How many protons, neutrons, and electrons? c.Naturally occurring Europium consists of two isotopes](https://reader033.vdocument.in/reader033/viewer/2022060206/5a4d1b947f8b9ab0599c2e0a/html5/thumbnails/11.jpg)
Potassium
![Page 12: Wake-up a.Refer to element below. Name the element. b.How many protons, neutrons, and electrons? c.Naturally occurring Europium consists of two isotopes](https://reader033.vdocument.in/reader033/viewer/2022060206/5a4d1b947f8b9ab0599c2e0a/html5/thumbnails/12.jpg)
Hydrogen
![Page 13: Wake-up a.Refer to element below. Name the element. b.How many protons, neutrons, and electrons? c.Naturally occurring Europium consists of two isotopes](https://reader033.vdocument.in/reader033/viewer/2022060206/5a4d1b947f8b9ab0599c2e0a/html5/thumbnails/13.jpg)
Carbon
![Page 14: Wake-up a.Refer to element below. Name the element. b.How many protons, neutrons, and electrons? c.Naturally occurring Europium consists of two isotopes](https://reader033.vdocument.in/reader033/viewer/2022060206/5a4d1b947f8b9ab0599c2e0a/html5/thumbnails/14.jpg)
Neon
![Page 15: Wake-up a.Refer to element below. Name the element. b.How many protons, neutrons, and electrons? c.Naturally occurring Europium consists of two isotopes](https://reader033.vdocument.in/reader033/viewer/2022060206/5a4d1b947f8b9ab0599c2e0a/html5/thumbnails/15.jpg)
Calcium