Tuesday, February 22, 2011

JUST LIKE SOLAR SYSTEM..........



MODERN ATOMIC MODEL
By James Chadwick

SUBATOMIC :

PROTON (+)
NEUTRON (no charge)
Both located in nucleus

ELECTRON (-)
Round nucleus at certain orbit

RELATIVE MASS OF :

PROTON - 1
NEUTRON -1
ELECTRON -1/1840
almost 0

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