CHMA10H3 Lecture 7: CHMA10- Sample notes- September 19

• School: UTSC
• Department: Chemistry
• Course: CHMA10H3
• Professor: Marco

Document Summary

9/19: neutral charge: net charge is 0. M1+ (g) + e- (ie1 : remove (this electron is easiest to remove) m(g) + ie1 efrom neutral atom) M2+ (g) + e- (ie2 : energy to remove from 1+ ion. The larger zeff on the electron, the more energy it takes to remove it. Ie1 decreases down a column: strength of attraction is related to the most probable distance the valence electrons are from the nucleus and zeff on valence electrons. The larger the orbital an electron is in, the farther its most probable distance will be from the nucleus and the less attraction it will have for the nucleus. Ie1 increases across a period: traversing across a period increases the effective nuclear charge on the valence electrons. Irregularities in the general trend: the trend is not followed when the added valence electron in the next element, 1. enters a new sublevel (higher energy sublevel)