Atomic Structure & Periodicity
2 terms
Chalcogens
Atomic Structure & Periodicity
Dimensionless
The group 16 elements — oxygen, sulfur, selenium, tellurium and polonium — collectively known as the ore-forming elements.
ns² np⁴
Core Electron
Atomic Structure & Periodicity
Dimensionless
An electron occupying a completely filled inner shell that does not take part in chemical bonding.