The bromine atom possesses 35 electrons. It contains 6 electrons in 2p orbital, 6 electrons in 3p orbital and 5 electron in 4p orbital. Which of these electron experiences the lowest effective nuclear charge ?
The effective nuclear charge experienced by an electron is the net positive charge experienced by the electron due to the nucleus, after accounting for the shielding effect of other electrons. The effective nuclear charge increases as we move across a period from left to right, and decreases as we move down a group.
Out of the given set of electrons in the 2p, 3p, and 4p orbitals of bromine, the 4p electrons experience the lowest effective nuclear charge. This is because the 4p electrons are located farther away from the nucleus than the 2p and 3p electrons and are shielded by the other electrons present in the atom.
The 2p and 3p electrons are located closer to the nucleus and are not shielded as effectively as the 4p electrons. Therefore, they experience a higher effective nuclear charge.
In summary, the 4p electrons experience the lowest effective nuclear charge out of the given set of electrons in the 2p, 3p, and 4p orbitals of bromine.
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