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December 22, 2014

Homework Help: physical science

Posted by liz on Friday, November 2, 2007 at 11:20pm.

Thanks got thru all but one

Element P has an atomic number of 92 and atomic mass of 238. Element s has 92 protons and 143 neutrons.

atomic number and protons are the same would htese two elements be an isotope or different elements

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