IB Chemistry HL 1.3.4 Sublevels Question Bank

Lithium and boron are elements in period 2 of the periodic table. Lithium occurs in group 1 (the alkali metals) and boron occurs in group 3. Isotopes exist for both elements.

The electron configuration of boron is $1 s^{2} 2 s^{2} 2 p^{1}$. Draw the shape of an s orbital and a $\mathrm{p}_{x}$ orbital on the axes below.