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Because it shows electrons revolving around the nucleus like planets around a sun.
The word “planet” comes from greek, a word “planetas” meaning “wanderer.” When folks long ago saw these moving dots of light in the sky, to them, they could really not decide what they were other than what made them different from the stars. they wandered… and so you have planets. “planetary” has also been used to describe things that sort of, move in circles around each other. The first transmissions in cars used a “planetary gear” setup.. multiple gears turning inside one large one, around a central hub.. So a planetary model would really mean at its core level, a model which involved objects that revolved around a central mass of some sort.
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Model of evolution. - 4 Answers
So out of curiosty how is Evolution called a theory? Shouldnt it be considered a Model because there is no evidence that sup...
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difference between an atom bomb and a nuclear weapon? - 1 Answers
wats the difference between an atom bomb and a nuclear weapon?
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when it combines with sodium, a chlorine atom will what? - 3 Answers
to acheive stability when it combines with sodium, a chlorine atom will what? accept 1 electron? accept 7 electrons? donate ...
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What is Iron Oxide's atomic symbol?? - 1 Answers
I'm not trying to get answers I just want to know which one it is so Is it FeO2 or FeO3.
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How many atoms is an average person made up of. I know that the Universe contains about 10^80 atoms. Does anyone know how m...
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Building a model refrigerator - 2 Answers
I'm building a model refrigerator, need to find a way to make it work. where do you think I can get the materials small enou...
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How to distinguish between an atom and an element? - 2 Answers
Could someone pleeease tell me the distinguish between an Atom and an Element. I am confused here :s Help me. I need the answ...
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how do subatomic particles determine the properties of an atom? - 3 Answers
How do protons, neutrons, and electrons determine the properties of an atom?
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Atomic Radiation? - 4 Answers
Does anyone know what Atomic Radiation is?
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Is there a difference between molecules, formula units, and atoms? - 4 Answers
Is there a difference between molecules, formula units, and atoms? Aren't they all particles? What is the difference? I don't...
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