Which of the Following Pairs Are Isotopes

question 9

Multiple Choice

Which of the following pairs are isotopes?

• A)(Ca⁺² and Mg⁺²)
• B)(¹⁹⁹Hg and ²⁰⁰Hg)
• C)(¹⁸O and ¹⁹F)
• D)(²³⁸U and ²³⁸Np)

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