Do valence electrons determine electrical conductivity?

[milkism]

TL;DR Summary

Does lower valence electrons lead to higher electrical conductivity?

I have trouble researching whether valence-electrons take part in electrical conductivity. Some sources say that a lower amount of valence electrons lead to an higher electrical conductivity, whilst others say the opposite. And each have their different reasons, for example, lower valence electrons lead to higher electrical conductivity, because less energy is needed to move the valence electrons.

I personally think in generally how less the amount of valence electrons how greater the electrical conductivity, because the best conductors have 1 valence electron. Because it has smaller ionisation energy, which gives up electrons easier. But it's a combination of different factors like the crystal structures, with FCC structures being better in electrical conductivity.
Beryllium has two valence electrons, but it's not a better conductor than aluminium, which has three, because the crystal structure of beryllium is HCP, where aluminium's FCC. So the combination of valence-electrons and crystal structure makes aluminium a better conductor.

I would like to know if there's actually a relation between valence-electrons and electrical conductivity, and what the correct relation is.

 

[davenn]

TL;DR Summary: Does lower valence electrons lead to higher electrical conductivity?

I have trouble researching whether valence-electrons take part in electrical conductivity. Some sources say that a lower amount of valence electrons lead to an higher electrical conductivity, whilst others say the opposite. And each have their different reasons, for example, lower valence electrons lead to higher electrical conductivity, because less energy is needed to move the valence electrons.

I personally think in generally how less the amount of valence electrons how greater the electrical conductivity, because the best conductors have 1 valence electron. Because it has smaller ionisation energy, which gives up electrons easier. But it's a combination of different factors like the crystal structures, with FCC structures being better in electrical conductivity.
Beryllium has two valence electrons, but it's not a better conductor than aluminium, which has three, because the crystal structure of beryllium is HCP, where aluminium's FCC. So the combination of valence-electrons and crystal structure makes aluminium a better conductor.

I would like to know if there's actually a relation between valence-electrons and electrical conductivity, and what the correct relation is.

From https://www.thoughtco.com/electrical-conductivity-in-metals-2340117

""Transfer of Energy​

The transfer of energy is strongest when there is little resistance. On a billiard table, this occurs when a ball strikes against another single ball, passing most of its energy onto the next ball. If a single ball strikes multiple other balls, each of those will carry only a fraction of the energy.By the same token, the most effective conductors of electricity are metals that have a single valence electron that is free to move and causes a strong repelling reaction in other electrons. This is the case in the most conductive metals, such as silver, gold, and copper. Each has a single valence electron that moves with little resistance and causes a strong repelling reaction.Semiconductor metals (or metalloids) have a higher number of valence electrons (usually four or more). So, although they can conduct electricity, they are inefficient at the task. However, when heated or doped with other elements, semiconductors like silicon and germanium can become extremely efficient conductors of electricity.""

my bolding
cheers
Dave