Question

11 multiple choice 1 point
what is the electron configuration for carbon after one electron has been added to it (e.g., gone through electron affinity?)
1s²2s²2p⁵
1s²2s²2p²
1s²2s²2p³
1s²2s²2p⁴
clear my selection
12 multiple choice 1 point
ionization energy ____ electrons and electron affinity ____ electrons to neutral atoms.
finds, seeks
removes, adds
gives, removes
seeks, finds
clear my selection

Explanation:

Question 11

Step1: Recall Carbon's Electron Config

Carbon (C) has atomic number 6, so its electron configuration is \(1s^2 2s^2 2p^2\).

Step2: Add One Electron

When one electron is added (electron affinity), the \(2p\) subshell gains one electron. So the new configuration is \(1s^2 2s^2 2p^3\).

Ionization energy is the energy to remove an electron from a neutral atom. Electron affinity is the energy change when an electron is added to a neutral atom. So ionization energy removes electrons, electron affinity adds electrons.

Answer:

\(1s^2 2s^2 2p^3\) (the third option)

Question 12