Bohr Model Note Reference PDF

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Bohr atomic model diagram drawings how to ....

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BohrMode lNot e s :

NEUTRONSAND PROTONS: Ne ut r onsa ndpr ot onsa r el oc a t e di nt henuc l e us . Wr i t et henumbe rofpr ot onsa nd ne ut r onsi ns i det henuc l e usus i ngt hes ymbol s‘ p’a nd‘ n’ . Numbe rofpr ot ons=At omi cNumbe r Numbe rofne ut r ons=At omi cMas s–At omi cNumbe r ELECTRONS: El e c t r onsa r el oc a t edi ne ner gyl e ve l ss ur r oundi ngt henuc l e us . Numbe rofe l e c t r ons=Numbe rofpr ot ons How ma nye l e c t r onsc a nfiti ne ac hor bi t a l ? s t 1 or bi t a l=2e l e c t r ons nd 2 or bi t a l=8e l ec t r ons r d 3 or bi t a l=8e l ec t r ons t h 4 or bi t a l=18e l e c t r ons

El e c t r onsa r ea l wa ysi nPAI RS TheLOWERe ne r gyl eve l s( c i r c l e s )MUSTbef ul lbef or eyous t a r tfil l i ngt hehi gher s t e ne r gyl e ve l s . ( i et he1 e ne r gyl eve lMUSTha vet woe l e c t r onsi ni tBEFOREyou nd s t a r tfil l i ngt he 2e ne r gyl eve l )

Ex a mpl e:OXYGEN Pr ot ons=At omi cNumber=8 Chemistry

2nd energy level Fill with 6 to make a total of 8 Bohr Model Notes

First energy level= 2 electrons avi

Ne ut r ons=Ma s s#–At omi c#=16–8=8 El e c t r ons=Pr ot ons=8 Oxygen Found in the 2nd ROW = 2 energy levels 6th element in = 6 electrons in outer energy level

6 7 # Row tells you # of Energy Levels

1

2

Columns tell you the # of electrons in each energy level

3

4

5

6

7

8

1

2 e-

2

8 e-

3

8 e-

4

18 e-

5

18 e-

Chemistry

Bohr Model Notes

Gogolin/Mavi

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The # of ROWS tells you the # of orbitals you need around the element

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Each ROW tells you how many electrons fill that orbital o Row 1 = e elements = 2 electrons o Row 2 = 8 elements = 8 electrons o Row 4 = 18 elements = 18 electrons

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The # of COLUMNS tells you how many electrons in the outermost orbital

Chemistry

Bohr Model Notes

Gogolin/Mavi

Chemistry

Bohr Model Notes

Gogolin/Mavi...