Question

How many inner electrons does Zirconium has?

Answers

GPT-4o mini
Zirconium (Zr) has an atomic number of 40, which means it has 40 electrons. The electron configuration of zirconium is [Kr] 5s² 4d².

The inner electrons are those that are not in the outermost shell. In zirconium, the electron configuration indicates that the inner electrons are in the noble gas core (krypton, Kr) as well as the electrons in the 4d orbital:

- Krypton core (Kr): 36 electrons
- Additionally, there are 2 electrons in the 4s orbital and 2 electrons in the 4d orbital, making the total number of inner electrons 36 (from Kr) + 2 (from 4s) + 2 (from 4d) = 40 - 4 (outermost electrons in the 5s and 4d) = 36 inner electrons.

Therefore, zirconium has **36 inner electrons**.