Question

to what element does the following electronic configuration belong? 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵ si sb cl br o

Explanation:

Step1: Calculate the total number of electrons

The sum of the exponents in the electron - configuration gives the number of electrons.

$$2 + 2+6 + 2+6 + 2+10 + 5=35$$

Step2: Relate the number of electrons to the atomic number

In a neutral atom, the number of electrons is equal to the atomic number. So the atomic number \(Z = 35\).

Answer:

Br