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einsteindude einsteindude
wrote...
Posts: 5058
9 years ago
If an element has 10 protons and 11 neutrons and 10 electrons, which expression correctly identifies the element?
A) neon-21
B) neon-11
C) neon-31
D) sodium-11
E) sodium-20
Textbook 
Conceptual Physical Science

Conceptual Physical Science


Edition: 6th
Authors:
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bSharpbSharp
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9 years ago
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9 years ago
Super! Don't forget to mark my post as best answer Grinning Face
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