Question

name any two elements that have variable valencies

Answer 1

Hey mate !!
Here's your answer :-)

Iron -: Ferric+3 and Ferrous+2

Copper -: Cupric+2 and Cuprous+1

Hope this helps☺☺

Answer 2

$Hey friend$ ^_^

Here is your answer:

✨ Elements having variable valencies are:

▶ Copper
▶ Iron
▶ Mercury
▶ Tin
▶ Lead
▶ Gold
▶ Silver

Hope it helps u! ✌✌✌