Question: Naturally occurring copper exists in two isotopic forms: 63 Cu and 65Cu. The atomic mass of copper is 63.55 amu. What is the approximate natural

Naturally occurring copper exists in two isotopic forms: 63 Cu and 65Cu. The atomic mass of copper is 63.55 amu. What is the approximate natural abundance of 63 Cu? O 50% 90% O 63% O 70% 30%

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