Bohr's Model of the Atom.

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Presentation transcript:

Bohr's Model of the Atom

Bohr's Model of the Atom Niels Bohr (1913):

Bohr's Model of the Atom Niels Bohr (1913): -studied the light produced when atoms were excited by heat or electricity

Bohr's Model of the Atom Bohr's model: -electrons orbit the nucleus like planets orbit the sun

Bohr's Model of the Atom Bohr's model: -electrons orbit the nucleus like planets orbit the sun -each orbit can hold a specific maximum number of electrons

Bohr's Model of the Atom Bohr's model: -electrons orbit the nucleus like planets orbit the sun -each orbit can hold a specific maximum number of electrons orbit maximum # electrons 1 2 8 3 4 18

Bohr's Model of the Atom Bohr's model: -electrons orbit the nucleus like planets orbit the sun -each orbit can hold a specific maximum number of electrons -electrons fill orbits closest to the nucleus first.

Bohr's Model of the Atom e.g. fluorine: #P = #e- = #N =

Bohr's Model of the Atom e.g. fluorine: #P = atomic # = 9 #e- = #N =

Bohr's Model of the Atom e.g. fluorine: #P = 9 #e- = # P = 9 #N =

Bohr's Model of the Atom e.g. fluorine: #P = 9 #e- = 9 #N = atomic mass - # P = 10

Bohr's Model of the Atom e.g. fluorine: #P = 9 #e- = 9 #N = 10 draw the nucleus with protons & neutrons 9P 10N

Bohr's Model of the Atom e.g. fluorine: #P = 9 #e- = 9 #N = 10 how many electrons can fit in the first orbit? 9P 10N

Bohr's Model of the Atom e.g. fluorine: #P = 9 #e- = 9 #N = 10 how many electrons can fit in the first orbit? 2 9P 10N

Bohr's Model of the Atom e.g. fluorine: #P = 9 #e- = 9 #N = 10 how many electrons are left? 9P 10N

Bohr's Model of the Atom e.g. fluorine: #P = 9 #e- = 9 #N = 10 how many electrons are left? 7 9P 10N

Bohr's Model of the Atom e.g. fluorine: #P = 9 #e- = 9 #N = 10 how many electrons are left? 7 how many electrons fit in the second orbit? 9P 10N

Bohr's Model of the Atom e.g. fluorine: #P = 9 #e- = 9 #N = 10 how many electrons are left? 7 how many electrons fit in the second orbit? 8 9P 10N

Bohr's Model of the Atom e.g. fluorine: #P = 9 #e- = 9 #N = 10 9P 10N

Bohr's Model of the Atom try these: hydrogen boron magnesium

Bohr's Model of the Atom try these: hydrogen 1P 0N

Bohr's Model of the Atom try these: boron 5P 6N

Bohr's Model of the Atom try these: magnesium 12P 12N