Copper Has Two Naturally Occurring Isotopes with Atomic Masses of 62.9296

question 29

Multiple Choice

Copper has two naturally occurring isotopes with atomic masses of 62.9296 u ( ) and 64.9278 u ( ) .The atomic mass of copper is 63.546 u.What is the percent distribution of the isotopes?

• A)69.15% , 30.85%
• B)30.85% , 69.15%
• C)1.08% , 98.92%
• D)98.92% , 1.08%
• E)99.03% , 0.97%

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