They form negative ions.
What is called metal?
Metal is any of a class of substances characterized by high electrical and thermal conductivity as well as by malleability, ductility, and high reflectivity of light.
What is a metal made of?
Metals are minerals like iron or lead that are found underground in rocks. These are separated from the rocks using heat. Metals are very useful materials.
Learn more about metal here https://brainly.com/question/4701542
#SPJ2
