Question

ok new how can you sort metal as soft or hard

Answer 1

that can be cut with knife is a soft metal
ex...sodium
and
that cannot be cut with knife are hard metal
hope you understand

Answer 2

hey here is your answer
Metal ions with the highest affinities for hardbases are hard acids, whereas metal ions with the highest affinity for soft bases are softacids. ... Conversely, soft acids tend to be cations of less electropositive metals; consequently, they have lower charge-to-radius ratios and are more polarizable
hope this helps you dear ☺️☺️☺️☺️☺️