Can someone please help with giving me some important information about Zr-Zirconium because i can find it anywhere and i have a project about it.. thanks!

Zirconium is a chemical element with the symbol Zr and atomic number 40. The name zirconium is taken from the name of the mineral zircon, the most important source of zirconium. It is a lustrous, grey-white, strong transition metal that closely resembles hafnium and, to a lesser extent, titanium. Zirconium is mainly used as a refractory and opacifier, altho…

the answer is definitely c.

answer; 4 electrons;