Argon (Ar) has three naturally occurring isotopes namely: Ar-36, Ar-38, and Ar-40.a) How are these 3 isotopes alike?b) How are these isotopes different?Type your answer to a and b in the answer box provided for this question.

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Answered: Argon (Ar) has three naturally…

Chemistry In Focus

7th Edition

ISBN:9781337399692

Author:Tro, Nivaldo J.

Publisher:Tro, Nivaldo J.

Chapter3: Atoms And Elements

Section: Chapter Questions

Problem 4SC: Copper is composed of two naturally occurring isotopes: Cu-63 with a mass of 62.94amuandCu-65 with a...

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Scientists J. J. Thomson and William Thomson (Lord Kelvin) made numerous contributions to our understanding of the atom’s structure. Which subatomic particle did J. J. Thomson discover, and what did this lead him to postulate about the nature of the atom? William Thomson postulated what became known as the “plum pudding” model of the atom’s structure. What did this model suggest?
State the main points of Dalton’s atomic theory usingyour own words. Which parts of Dalton’s theory werelater found to be erronous? Explain why.
A fundamental idea of Daltons atomic theory is that atoms of an element can be neither created nor destroyed. We now know that this is not always true. Specifically, it is not true for uranium and lead atoms as they appear in nature. Are the numbers of these atoms increasing or decreasing? Explain.
Both atomic elements and molecular elements exist. Are there such entities as atomic compounds and molecular compounds? If so, provide an example and microscopic drawing. If not, explain why not.
Why is it important to understand atoms?
Thomson and Rutherford helped to show that atoms consist of three types of subatomic particles, two of which are charged. What if subatomic particles had no charge? How would this affect what you have learned?
Copper is composed of two naturally occurring isotopes: Cu-63 with a mass of 62.94amuandCu-65 with a mass of 64.93amu. Look up the atomic mass of copper and determine which of the two isotopes is more abundant. a.Cu-63ismoreabundant.b.Cu-65ismoreabundant.c.Bothisotopesareequallyabundant.
Whose work is credited with being the beginning of modern atomic theory?

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Argon (Ar) has three naturally occurring isotopes namely: Ar-36, Ar-38, and Ar-40. a) How are these 3 isotopes alike? b) How are these isotopes different?