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What is the complete symbol of an element that has 78 electrons and 117 neutrons?
Wiki User
∙ 9y ago
Assuming this is an atom, 78 electrons means there are 78 protons, so this is platinum. The mass number will be
78 + 117 = 195
so the complete symbol will be 195/78 Pt
where I've used the / to represent that 195 is a superscript and 78 is a subscript.
Wiki User
∙ 9y ago
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