Question

Na${}^{\oplus }$ and Ne are _______ to each other.

• A. isotopes
• B. isoelectronic
• C. isobars
• D. allotropic

Answer 1

Answer: (B)

isoelectronic

Isoelectronic species are the species that have same number of electrons.

The electronic configuration of $Ne=\left[He\right]{2s}^2{2p}^6$

The electronic configuration of $N{a}^{+}={1s}^2{2s}^2{2p}^6$

Thus both have 10 electrons.

Thus $Ne\text{and}N{a}^{+}$ are isoslectronic.