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What is Protactinium's atomic number?

Protactinium

Protactinium

91 is the atomic number of Protactinium.
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What is the atomic number (the number of protons found in an atom) of the element protactinium, the chemical element with the symbol Pa and atomic number 91?
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External web pages (using standard web search):

Atomic number - Wikipedia, the free encyclopedia
In chemistry and physics, the atomic number (also known as the proton number) is the number of protons found in the nucleus of an atom and therefore identical to the charge ...
http://en.wikipedia.org/wiki/Atomic_number
List of elements - Wikipedia, the free encyclopedia
National Nuclear Data Center: Brookhaven National Laboratory. http://www.nndc.bnl.gov/chart/. Retrieved 2008-06-06. (for atomic weights of elements with atomic numbers 103-118)
http://en.wikipedia.org/wiki/List_of_elements_by_atomic_number
Atomic Number and Mass Number
ATOMIC NUMBER AND MASS NUMBERS. After reading this section you will be able to do the following: Define and determine the ...
http://www.ndt-ed.org/EducationResources/HighSchool/Radiography/atomicma...
What is atomic number? - Yahoo! Answers
Atomic number is the number of protons in an atom. Protons are what determine the identity of any element. For example, an element with one proton will also be ...
http://answers.yahoo.com/question/index?qid=20110531065634AAfijSB
What is the atomic number and what does it tell you about the ...
What is the atomic number and what does it tell you about the number of protons in an atom?
http://wiki.answers.com/Q/What_is_the_atomic_number_and_what_does_it_tel...

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