Isoelectronic

Definition

Isoelectronic describes atoms, ions, or molecules that have the same number of electrons or the same electronic structure. This often results in similar chemical properties.

5 Must Know Facts For Your Next Test

1. Isoelectronic species have identical electron configurations but may differ in nuclear charge.
2. Common examples include $\text{Ne}$ and $\text{Na}^+$, both with 10 electrons.
3. When comparing isoelectronic species, the one with the higher positive charge usually has a smaller radius due to increased nuclear attraction.
4. Isoelectronic series can include both neutral atoms and ions.
5. Recognizing isoelectronic relationships helps predict chemical behavior and bonding patterns.

Review Questions

Related terms

Electron Configuration:

The distribution of electrons in an atom's orbitals.

Ionization Energy:

The energy required to remove an electron from a gaseous atom or ion.

Atomic Radius:

A measure of the size of an atom from its nucleus to the outer boundary of its electron cloud.