[填空题]
The ionization (binding) energy of the outermomvq7s 65tl4i7b.x3 oo5xfl ikst elec()si2 t 4jyhygtron in boron is $8.26 \, \text{eV}$.
(a) Use the Bohr model to estimate the "effective charge," $Z_{\text{eff}}$, seen by this electron. $Z_{\text{eff}} $=
(b) Estimate the average orbital radius. z = $ \times 10^{-10}\ \text{m}$
