ELECTRON
CONFIGURATION
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Understanding Atomic Orbitals & Electron Distribution: Bohr Model & Electron Configuration, Study notes of Chemistry
An overview of the Bohr Model, which explains the arrangement of electrons around the nucleus of an atom. It introduces the concept of energy levels and orbital shapes, and discusses the electron configuration of various elements using the periodic table as a tool. Hund's Rule, Aufbau Principle, and Pauli Exclusion Principle are also covered.
What you will learn
- What is the Bohr Model and how does it explain electron arrangement around the nucleus?
- What are the four distinct orbital shapes and how many electrons can each hold?
- What is the electron configuration of Neon according to the Bohr Model?
- What is the electron configuration of Silicon according to the Bohr Model?
- What is Hund's Rule and how does it apply to electron configuration?
Typology: Study notes
2021/2022
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ELECTRON
CONFIGURATION
BOHR MODEL
THE BOHR MODEL OF ELECTRON ARRANGEMENT IS COMMONLY TAUGHT IN
MIDDLE SCHOOL
THE BOHR MODEL shows electrons occupying different energy levels, orbiting the nucleus. Each energy level has a maximum amount of electrons. 2,8,18,32,32,32,
Each orbital holds 2 electrons S orbital Can hold up two 2 electrons P orbital Can hold up to 6 electrons D orbital Can hold up to 10 electrons F orbital Can hold up to 14 electrons
ELECTRON CONFIGURATION
NEON (Ne) 10 e- exponent revels number of e- 1s^2 2s^2 2p^6 letter revels orbital shape(which coincides to block/region on periodic table Energy level The big number revels the energy level the electrons occupy, which also coincides to row on the periodic table.
PERIODIC TABLE AS A TOOL
S ORBITAL COLORED GREEN (2 ACROSS) P ORBITAL COLORED BLUE (6 ACROSS) D ORBITAL COLORED PINK (10 ACROSS) F ORBITAL COLORED PURPLE (12 ACROSS)
PERIODIC TABLE AS A TOOL
EXPONENT is seat number, counting across in the orbital block Neon 1s 2 2s 2 2p 6
PERIODIC TABLE AS A TOOL
What is the electron configuration of Silicon? 1s^2 2s^2 2p^6 3s^2 3p^2 What is the orbital diagram for Silicon?
AUFBAU PRINCIPLE ELECTRONS WILL OCCUPY THE LOWEST ENERGY LEVEL FIRST, BEFORE OCCUPYING HIGHER ENERGY LEVEL FILL 1S WITH ARROWS BEFORE 2S FILL 2S WITH ARROWS BEFORE 2P PAULI EXCLUSION PRINCIPLE TWO ELECTRONS IN THE SAME ORBITAL MUST HAVE OPPOSITE SPINS ONE ARROW UP, ONE ARROW DOWN HYDROGEN 1s^2
PERIODIC TABLE AS A TOOL
What is the electron configuration of lead (Pb)? 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^6 6s 2 4f 14 5d 10 6p 2 What is the orbital diagram for lead?