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Which of the following atoms and ions ar...

Which of the following atoms and ions are isoelectronic ?
`{:((i) Al^(3+), (ii) F, (iii)Cl ^(-)),((iv)O^(2-), (v) Na, (vi) Mg ^(2+)):}`
Arrange the isoelectronic ions in the decreasing order of their size.

Text Solution

AI Generated Solution

To determine which of the given atoms and ions are isoelectronic and to arrange them in decreasing order of size, we will follow these steps: ### Step 1: Identify the number of electrons in each atom/ion - **(i) Al³⁺**: Aluminum (Al) has an atomic number of 13, meaning it has 13 electrons. As Al³⁺ loses 3 electrons, it has: \[ 13 - 3 = 10 \text{ electrons} \] ...
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