Questions: Write the electron configuration for C4- ion. Select the correct answer below: C4-: 1s2 2s2 2p4 C4-: 1s2 2s2 2p6 C4-: 1s2 2s2 2p4 3s2 C4-: 1s2 2s2 2p6 3s2

Write the electron configuration for C4- ion.

Select the correct answer below:
C4-: 1s2 2s2 2p4
C4-: 1s2 2s2 2p6
C4-: 1s2 2s2 2p4 3s2
C4-: 1s2 2s2 2p6 3s2

Transcript text: Write the electron configuration for $\mathrm{C}^{4-}$ ion. Select the correct answer below: $\mathrm{C}^{4-}: 1 s^{2} 2 s^{2} 2 p^{4}$ $\mathrm{C}^{4-}: 1 s^{2} 2 s^{2} 2 p^{6}$ $\mathrm{C}^{4-}: 1 s^{2} 2 s^{2} 2 p^{4} 3 s^{2}$ $\mathrm{C}^{4-}: 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2}$

Solution

Solution Steps

Step 1: Determine the Atomic Number of Carbon

Carbon (C) has an atomic number of 6, which means it has 6 protons and, in its neutral state, 6 electrons.

Step 2: Determine the Electron Configuration of Neutral Carbon

The electron configuration of a neutral carbon atom is: \[ 1s^2 2s^2 2p^2 \]

Step 3: Determine the Electron Configuration of the $\mathrm{C}^{4-}$ Ion

The $\mathrm{C}^{4-}$ ion has gained 4 additional electrons compared to the neutral carbon atom. Therefore, the total number of electrons in $\mathrm{C}^{4-}$ is: \[ 6 + 4 = 10 \]

Step 4: Write the Electron Configuration for $\mathrm{C}^{4-}$

With 10 electrons, the electron configuration for $\mathrm{C}^{4-}$ is: \[ 1s^2 2s^2 2p^6 \]