Answer: The electrons in boron are arranged around the nucleus in three energy levels (shells) and subshells.
Explanation: Boron (B), with an atomic number of 5, has five electrons. These electrons are distributed in the 1s, 2s, and 2p subshell
The first energy level (shell) contains the 1s subshell with 2 electrons, the second energy level contains the 2s subshell with 2 electrons, and the remaining electron is in the 2p subshell.
In the 2p subshell, there is one unpaired electron in a single orbital.
Significance: The arrangement of electrons around the nucleus in boron’s energy levels and subshells determines its chemical behavior and its reactivity in various compounds and reactions.
The presence of unpaired electrons in the 2p subshell contributes to its ability to participate in chemical bonding.