Valence Electrons

[Shundeen Martinez 1D]

Which elements can have more than 8 valence electrons when being bonded?

[Patrick Cai 1L]

An example of an element being bonded with more than 8 valence electrons shared is phosphorus in the compound phosphorus pentachloride (PCl₅), which forms an expanded octet to accommodate this change.

[105002507]

I thought phosphorus had 5 valence electrons?

[gillianozawa4I]

PCl5 has five bonds, meaning there are 10 valence electrons. Therefore, PCl5 has an expanded octet. Since P is in Period 3, it is allowed to have an expanded octet. Hope this helps!

[Sameen Mahmood 3D]

Elements in period 3 or later that have a d subshell

[Zubair Ahmed 1L]

Phosphorous can have 5 bonds since it is in Period 3 and the d-block is included within it. As a result, it has 10 valence electrons and can create 5 bonds.

[Rian Montagh 2K]

Is phosphorus more stable with 10 or 8 electrons?

[isarose0]

Phosphorus, Sulfur and Chlorine can accommodate more than 8 valence electrons.