Choose the word that best completes this sentence. welding in confined spaces or on stainless steel generates a very toxic chemical.
a. carbon monoxide
b. hexavalent chromium
c. hydrogen sulfide
d. solvent vapors

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.