Bohr Models and the Periodic Table PDF

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A document containing info on Bohr Models and the periodic table....

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Name ___________________________ Per ______ Bohr Models and the Periodic Table Fill in the electrons on the Bohr model for the neutral, ground state atom of each element. Look for patterns in the valence shell of each group. I. Alkali metals (Group 1) - a highly reactive group Element

hydrogen

Symbol

H

Atomic number

1

# of protons in nucleus (+)

1

# of electrons (-)

1

Charge on the atom (protons -electrons=charge)

Element

1-1=0

lithium

Symbol



Atomic number



# of protons in nucleus (+)



# of electrons (-)



Charge on the atom (protons -electrons=charge)



Element

sodium

Symbol



Atomic number



# of protons in nucleus (+)



# of electrons (-)



Charge on the atom



Element

potassium

Symbol



Atomic number



# of protons in nucleus (+)



# of electrons (-)



Charge on the atom



Compare the valence electrons (the electrons in the outermost energy shell) for  the atoms represented above. How many electrons are in the valence shells?

II. Alkaline earth metals (Group 2) - a highly reactive group

Element

beryllium

Symbol



Atomic number



# of protons in nucleus (+)



# of electrons (-)



Charge on the atom



Element

magnesium

Symbol



Atomic number



# of protons in nucleus (+)



# of electrons (-)



Charge on the atom



Element

calcium

Symbol



Atomic number



# of protons in nucleus (+)



# of electrons (-)



Charge on the atom



Compare the valence electrons (the electrons in the outermost energy shell) for  the atoms represented above. How many electrons are in the valence shells?

III. Halogens (Group 17) - a highly reactive group Element

fluorine

Symbol



Atomic number



# of protons in nucleus (+)



# of electrons (-)



Charge on the atom



Element

chlorine

Symbol



Atomic number



# of protons in nucleus (+)



# of electrons (-)



Charge on the atom



Compare the valence electrons (the electrons in the outermost energy shell) for  the atoms represented above. How many electrons are in the valence shells?

IV. Noble Gases (Group 18) - an unreactive group Element

helium

Symbol



Atomic number



# of protons in nucleus (+)



# of electrons (-)



Charge on the atom



Element

neon

Symbol



Atomic number



# of protons in nucleus (+)



# of electrons (-)



Charge on the atom



Element

argon

Symbol



Atomic number



# of protons in nucleus (+)



# of electrons (-)



Charge on the atom



Compare the valence electrons (the electrons in the outermost energy shell) for  the atoms represented above. How many electrons are in the valence shells?...