I think it would be the second ionisation energy because Tl has the configuration [Xe]6s^2 5d^10 6p^1
Youve removed from 6p, one electron, then you are removing fron 6s anothed electron, so it would be the 2nd ionisation energy. Remember that electrons are removed from the highest number first then in order of p, s, d.
I think it would be the second ionisation energy because Tl has the configuration [Xe]6s^2 5d^10 6p^1
Youve removed from 6p, one electron, then you are removing fron 6s anothed electron, so it would be the 2nd ionisation energy. Remember that electrons are removed from the highest number first then in order of p, s, d.
Ooh thank you makes sense But how do you know Tl has an electron configuration of [Xe]6s^2 5d^10 Xe has 54 electrons And Tl has 81 .???