PLZZZ HELP!!! A chemist has synthesized a heavy element in the laboratory and found that it had this electron configuration: 1s22s22p63s23p64s23d104p65s24d105p6 6s24f145d106p67s25f146d8

What is the name of this element?

a
Bohrium
b
Meitnerium
c
Darmstadtium
d
Seaborgium
e
Hassium
f
Roentgenium
K

Ijust took the quiz. their is no coefficient needed. : )

Naoh + hbr -> nabr (salt) + h2o ca (oh)2 + 2hbr - - - > ca (br)2 + 2h2o

Electron equations of the given changes are as follow,a)                              cu      →      cu⁺²  + 2e⁻b)                              mg⁺²  +  2 e⁻      →      mgc)                              cl⁻    →      cl  +  1e⁻d)                              s  +  2 e⁻    →      s²⁻e)                                o²⁻      →      o  +  2 e⁻f)                              p  +  3 e⁻    →      p³⁻g)                              fe²⁺    →      fe³⁺  + 1 e⁻h)                              s²⁻    →      s⁴⁺  +  6 e⁻