which of the following is the correct electron configuration of the chloride ion (cl⁻)?\n1s²2s²2p⁶3s²3p⁵\n1s²…
which of the following is the correct electron configuration of the chloride ion (cl⁻)?\n1s²2s²2p⁶3s²3p⁵\n1s²2s²2p⁶3s²3p⁴\n1s²2s²2p⁶3s²3p⁶\n1s²2s²2p⁶
Answer
Answer:
1s²2s²2p⁶3s²3p⁶
Explanation:
Step1: Recall chlorine's atomic number
Chlorine (Cl) has atomic number 17.
Step2: Determine electrons in chloride ion
Chloride ion (Cl⁻) has one extra electron, so 17 + 1=18 electrons.
Step3: Write electron - configuration
Filling orbitals according to Aufbau principle, we get 1s²2s²2p⁶3s²3p⁶.