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OpenStudy (anonymous):
Which symbol correctly represents an element (D) whose atoms contain 15 protons and 20 neutrons?
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OpenStudy (chmvijay):
no of protons = atomic number of element
OpenStudy (anonymous):
Ne?
OpenStudy (anonymous):
Wait Ca
OpenStudy (anonymous):
35/15 D I think
OpenStudy (abb0t):
\(D\) isn't even an answer choice, amy! Lol what the heck!
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OpenStudy (anonymous):
Amy's correct, thank you
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