1. If an atom has a mass # of 209 and has 127 neutrons in its nucleus, what is the name of this element?
2. If another atom has 92 protons and has a mass # of 240, what is the name of the atom and how many neutrons does it have in its nucleus?
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1. If an atom has a mass # of 209 and has 127 neutrons in its nucleus, what is the name of this element? 2. If another atom has 92 protons and has a mass # of 240, what is the name of the atom and how many neutrons does it have in its nucleus? |
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