Each atom of an element has the following electron configuration.
1s22s22p63523p64s23d104p65s4d1055 what is the name of the element?
o bromine
o iodine
o tellurium
o xenon

The answer is c) pyrite

Order of filling levels and sublevels of electrons: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²3f¹⁴5d¹⁰6p⁶for an element with 5 electrons in the 3d energy level: full configuration: 1s²2s²2p⁶3s²3p³.

I’m really not sure what’s the answer. sorry

Answer(d) unstable compounds that convert to acetals in the presence of alcohol and an acid; (b) semiacetals produced by alcohol subtraction from ketone;