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Chemistry 20 Online
OpenStudy (anonymous):

Can someone help me figure out how to set these Isotopes please. I really need help and the photo is in the comments

OpenStudy (rushwr):

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OpenStudy (anonymous):

OpenStudy (anonymous):

It was loading and I think it's up now

OpenStudy (rushwr):

opps sorry I was distracted !

OpenStudy (rushwr):

|dw:1444024467678:dw| Mass number is the no. of protons+ no. of neutrons. Atomic number is the no. of protons usually in an element the no. of protons = no. of electrons.

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