Isotop, (¹²₆C & ¹⁴₆C), (³⁵₁₇Cl dan ³⁷₁₇Cl), Isobar, (⁴⁰₁₈Ar & ⁴⁰₂₀Ca), (¹⁴₆C dan ¹⁴₇N), Isoton, (²³₁₁Na & ²⁴₁₂Mg).

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