Question

which set correctly orders the atoms from lowest to highest ionization energy? te < o < se < s te < se < s < o s < o < te < se o < s < se < te

Explanation:

Step1: Recall ionization - energy trend

Ionization energy increases across a period and decreases down a group in the periodic table. O, S, Se, and Te are in the same group (Group 16).

Step2: Analyze the order

As we move down Group 16 from O to Te, the atomic size increases, and the out - most electrons are farther from the nucleus. So, the ionization energy decreases.

Answer:

Te < Se < S < O