Question

why we say that metals are electropositive?

Answer 1

 An electropositive element is one that has tendency to lose electrons and form positively charged ion. Metals like Na, Mg, K, Ca, Fe, Zn lose electrons and form positively charged ion. Due to this metals arecalled electropositive metals.

here is your answer ☺️

Answer 2

because metals have tendency to loss electron to form positive ion so these are electropositive.
for example:-Na,k ,etc alletals