The bromine atom possesses 35 electrons. It contains 6 electron in 2p orbitals, 6 electrons in 3p orbitals and 5 electrons in 4p orbitals. Which of these electron experiences the lowest effective nuclear charge?

Explanation

To determine which electrons in the bromine atom experience the lowest effective nuclear charge (ENC), we need to analyze the given information about the electron configuration and the concept of effective nuclear charge.

### Step-by-Step Solution:

1. **Understanding Effective Nuclear Charge (ENC)**:
- Effective nuclear charge is the net positive charge experienced by an electron in an atom. It accounts for the actual nuclear charge (number of protons) and the shielding effect caused by other electrons.
- Electrons in orbitals that are farther from the nucleus generally experience a lower effective nuclear charge due to increased shielding by inner electrons.

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