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Physics 14 Online
OpenStudy (anonymous):

What element is this? How do you know?

OpenStudy (anonymous):

OpenStudy (anonymous):

pretty sure its Helium

OpenStudy (rajat97):

yes it is helium as it contains two protons

OpenStudy (rajat97):

i.e. it's atomic number is two

OpenStudy (anonymous):

Thank you! :)

OpenStudy (rajat97):

thank you for the medal!

OpenStudy (jfraser):

Count the protons and it will always tell you the identity of the atom

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