Answer:
first answer
Explanation:
atomic number of bromine is 35
[tex]1{s}^{2} 2 {s}^{2} 2 {p}^{6} 3 {s}^{2} 3 {p}^{6} 3 {d}^{10} 4 {s}^{2} 4 {p}^{5} [/tex]
1s22s22p63s23p64s23d104p5
;)
