V3−
x−
y+
z3+
a) a metal that lost three electrons b) a nonmetal that gained three electrons c) a metal that lost one electron d) a nonmetal that gained one electron

The answer to your question is:

Explanation:

A) A metal that lost three electrons                         Z³⁺

B) A nonmetal that gained three electrons             V³⁻

C) A metal that lost one electron                              Y⁺

D) A nonmetal that gained one electron                 X⁻

not clear

practical process described pest part of scientific investigation.

because practical knowledge is powerful then therotical knowledge.