write the electron configuration for an argon cation with a charge of +1.
write the electron configuration for an argon cation with a charge of +1.
Answer
Explanation:
Step1: Recall argon's neutral electron - config
Argon (Ar) has 18 electrons with electron - configuration $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}$.
Step2: Consider the cation formation
An Ar⁺ ion has lost 1 electron. Electrons are removed from the highest - energy orbital. The highest - energy orbital in Ar is 3p. So, we remove 1 electron from the 3p sub - shell.
Answer:
$1s^{2}2s^{2}2p^{6}3s^{2}3p^{5}$