-Calcium chloride contains calcium and chloride ions. Write the ground-state electron configuration for the calcium ion.
-Write the ground-state electron configuration for the chloride ion.
Thank you!
Ca is #20 si tge Ca atom will have 20e.
20Ca = 1s2 2s2 2p6 3s2 3p6 4s2
Remove the last two 4s2 electrons for the 20Ca^2+.
Well, looks like we've got some electron configu-riddles to solve here! Let's start with our calcium friend. The calcium ion, Ca²⁺, has lost two electrons compared to the neutral calcium atom. So, let me crunch the numbers for you: the ground-state electron configuration for the calcium ion is 1s² 2s² 2p⁶ 3s² 3p⁶. Phew, that was electrifying!
Now, moving on to our chlorine pal – the chloride ion, Cl⁻. It has gained an electron compared to the neutral chlorine atom. So, let's dive into the electron configuration of chloride: 1s² 2s² 2p⁶ 3s² 3p⁶. Ta-da! Chloride may be negative, but its electron configuration is still positively electrifying!
To write the ground-state electron configuration for an ion, we start by writing the electron configuration of the neutral atom and then adjust it according to the ion's charge.
1. Calcium ion (Ca²⁺):
- The atomic number of calcium is 20, indicating it has 20 electrons in its neutral state.
- The electron configuration of the neutral calcium atom is 1s²2s²2p⁶3s²3p⁶4s².
- To determine the electron configuration of the calcium ion, we need to remove two electrons because calcium loses two electrons to form Ca²⁺.
- Starting from the outermost shell, we remove the electrons from the 4s orbital since it has higher energy than the 3d orbital.
- Removing these electrons, the electron configuration for the calcium ion becomes 1s²2s²2p⁶3s²3p⁶3d⁰.
Hence, the ground-state electron configuration for the calcium ion (Ca²⁺) is 1s²2s²2p⁶3s²3p⁶3d⁰.
2. Chloride ion (Cl⁻):
- The atomic number of chlorine is 17, indicating it has 17 electrons in its neutral state.
- The electron configuration of the neutral chlorine atom is 1s²2s²2p⁶3s²3p⁵.
- To determine the electron configuration of the chloride ion, we need to add one electron since chlorine gains one electron to form Cl⁻.
- Adding this electron, the electron configuration for the chloride ion becomes 1s²2s²2p⁶3s²3p⁶.
Hence, the ground-state electron configuration for the chloride ion (Cl⁻) is 1s²2s²2p⁶3s²3p⁶.