Question

which element has the greater ionization energy? lead (pb) germanium (ge) tin (sn) silicon (si)

Explanation:

Step1: Recall the trend of ionization energy in a group

Ionization energy decreases down a group in the periodic table. This is because as we move down a group, the atomic radius increases. The outermost electrons are farther from the nucleus and are less strongly attracted, so less energy is required to remove them.

Step2: Identify the group of the elements

Lead (Pb), Germanium (Ge), Tin (Sn), and Silicon (Si) all belong to Group 14 (IVA) of the periodic table.

Step3: Compare the positions of the elements in the group

Silicon (Si) is the highest in the group among the four elements.

Answer:

Silicon (Si)