A bromine atom has 35 electrons. At its ground state, how many of these electrons are in p orbitals?

(Input number only.)

Question

A bromine atom has 35 electrons. At its ground state, how many of these electrons are in p orbitals?

(Input number only.)

BlackTom AI · Accepted Answer

To determine how many electrons occupy p orbitals in bromine's ground state, start with the electron configuration. Bromine (35 electrons) has the noble-gas core of argon, [Ar], followed by 3d10 4s2 4p5. The p orbitals appear in several shells: the 2p, the 3p, and the 4p subshells contribute electrons. The 2p subshell holds 6 electrons (2p6), the 3p subshell holds 6 electrons (3p6), and the 4p subshell holds 5 electrons (4p5). The 3d subshell is a d orbital, and the 4s subshell is an s orbital, so they do not count toward p electrons. Adding the p electrons from all shells gives 6 + 6 + 5 = 17. Therefore, the total number of electrons in p orbitals is 17.

CHEM1012 (L2) Online Quiz #1

A bromine atom has 35 electrons. At its ground state, how many of these electrons are in p orbitals? (Input number only.)

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