Chemistry

Question Analysis
This question involves isoelectronic species (atoms/ions with the same number of electrons).
The main focus is on calculating the electron count of each ion and matching it to Ne’s 10 electrons.

Key Concept Explanation
Isoelectronic Ions: Cations lose electrons (electron count = atomic number - charge magnitude), anions gain electrons (electron count = atomic number + charge magnitude). Isoelectronic species have identical electron configurations.

Step-by-Step Solution
1. Ne has 10 electrons. Calculate electron count for each ion:
A) S²⁻: 16 + 2 = 18 electrons
B) Cl⁻: 17 + 1 = 18 electrons
C) K⁺: 19 - ...