²⁴₁₂Mg and ²⁵₁₂Mg are two atoms which are isotopes of each other.
What are isotopes?
Isotopes are those substances which are having the same atomic numbers but different atomic masses.
In the symbol of any atom, number which is present at the top side shows the mass and at the bottom shows the atomic number.
- ²⁷₁₄Si and ²⁵₁₂Mg are not isotopes as they don't have same atomic number.
- ²⁴₁₂Mg and ²⁴₁₃Al are not isotopes as they don't have same atomic number.
- ²⁴₁₂Mg and ²⁵₁₂Mg are isotopes as they have same atomic number.
- ²³₁₁Na and ²⁶₁₂Mg are not isotopes as they don't have same atomic number.
Hence ²⁴₁₂Mg and ²⁵₁₂Mg are isotopes of each other.
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