Question

1. the diagram shows the electron configuration around the chlorine nucleus. chlorine has 17 protons. chlorine has valence electrons, and the effective nuclear charge, z - eff for the chlorine atom shown is. which terms best complete the sentence?

Explanation:

Step1: Identify valence electrons

Chlorine has 7 outer - shell electrons.

Step2: Calculate effective nuclear charge

For chlorine, with 17 protons and 10 inner - shell electrons, $Z_{eff}=17 - 10=7$. The positive sign indicates attraction, so it's 7+.

Answer:

7, 7+