What I especially want to emphasize are any superlatives of the
elements, i.e. , the chemical properties and the nuclear properties,
each element has which are unique, aside from the fact of the
uniqueness of atomic number. Please point out any superlatives which I
have overlooked. There are mistakes in these descriptions please notify
me of the mistakes.

Element 27, cobalt, Co, is a lusterous, silvery-blue, hard metal,
ferromagnetic.  Cobalt blue is a color pigment to tiles, porcelains,
and enamels. Al-Ni-Co alloys are of exceptional magnetic strength.
High temperature alloys containing cobalt make jet propulsion engines.
Cobalt is biologically an essential trace element for both plants and
animals.  Cobalt is a constituent of vitamin B12.