* Isoelectronic means having the same number of electrons.
* Nitrogen (N) has an atomic number of 7, meaning it has 7 protons and 7 electrons in its neutral state.
To find an isoelectronic atom, we need to look for an element with a different number of protons but the same number of electrons (7).
The answer is oxygen (O).
Here's why:
* Oxygen has an atomic number of 8, meaning it has 8 protons.
* In its *ionic* form, oxygen typically gains 2 electrons to achieve a stable octet (8 electrons in its outermost shell).
* This gives oxygen an overall charge of -2 (O²⁻) and makes it isoelectronic with nitrogen.
