Tuesday, December 15, 2009

How do I figure out what the isotope is for Argon with 22 neutrons?

I'm stumped...How do I figure out what the isotope is for Argon with 22 neutrons?
isotope is the element and mass number the mass number is protons+neutrons argon has 18 protons and this isotope has 22 neutrons so 18+22 = 40 so the isotope is Argon-40

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