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The atomic number of two elements A and ...

The atomic number of two elements A and B are 8 and 12. Write the symbols of the ions that would be formed from their atoms.

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Element A: No. of electrons 8 and electronic configuration -2,6, the valency is -2 and the ion formed is `A^(-2)`
Element B: NO of electrons, 12 and electronic configuration -2, 8, 2, the valency is +2 and the ion formed is `B^(+2)`.
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