Answer:
no hablo espanol ok? sorry
Chromium is a chemical element with symbol Cr and atomic number 24. It is the first element in group 6. It is a steely-grey, lustrous, hard and brittle metal which takes a high polish, resists tarnishing, and has a high melting point.
1- Biron trifluoride
2- selenide
3- arsenic triselenide
