Zirconium
From apm
- Zr (fifth row) is the element below Titanium (fourth row)
- Zr makes similarly good compounds with various other elements as Ti
On elemental abundances
Zr is the most abundant fifth and below row non alkali element.
The only more common elements that are present in the fifth row and below are Strontium (Sr) and Barium (Ba).
Both from a purely structural material perspective not so useful earth alkali elements.
They like to form weak heavy and water soluble salts.
Then there is the even less structurally useful rubidium (Rb) (also fifth row).
It is slightly more rare than Zr.
From there on it is only downhill with elemental abundances in earth's crust.
The last ones with somewhat notable abundance are:
- Niobium (Nb)
- Lead (Pb), Tin (Sn)
- And of the more common left end of the rate earth elements interspersed in-between.
Like Cerium (Ce), Lanthan (La) and so on (all occurring quite dilute).
- Molybdenium (Mo)
- Tungsten (W)
Beyond that the noble metals:
- Silver (Ag), Gold (Au), ... all the way to the crazy rare Iridium (Ir)
