Question

Which is the electron configuration for bromine?

a) (1s²2s²2p³s²3p⁴4s²3d¹⁰4p⁵)
b) (1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵)
c) (1s²2s²2p³s²3p⁴s²3d¹⁰4p⁶)
d) (1s²2s²2p³s²3p⁶4s²3d⁰4p⁵)

Answer 1

The correct electron configuration for bromine is option b) (1s²2s²2p⁶3s²3p⁶4s²3d⁰4p⁵), following the Aufbau principle for filling atomic orbitals according to increasing energy levels.

Step-by-step explanation:

The electron configuration for bromine (Br), which has an atomic number of 35, is (1s²2s²2p⁶3s²3p⁶4s²3d⁰4p⁵). This means that the correct answer from the options provided is b) (1s²2s²2p⁶3s²3p⁶4s²3d⁰4p⁵).

To understand this configuration, it's important to follow the Aufbau principle, which states that electrons fill atomic orbitals in the order of increasing energy levels. For bromine, electrons fill the 1s, 2s, 2p, 3s, 3p, 4s, and 3d subshells, before partially filling the 4p subshell with five electrons.