It is a soft metal
Plutonium is not a soft metal.
it is a hard metal.
Soft
its an alkali metal
hard
A hard metal will act as an abrasive on a soft metal if they come in direct contact. The hard metal will cut grooves in the soft metal.
It can be soft or hard.
No they are hard, but gold is a relatively soft metal.
Caesium is a soft metal
SOFT
Gold is soft and hard, gold is hard when it has metal plating and soft when there isn't metal plating.