periodic trends

metals tend to lose/gain e- to become noble gases

lose

metallic character is strongest

bottom left

effective nucelar charge (Zeff = Z-core e-) across a period

increases since more protons but not that many more core (more valence)

effective nucelar charge (Zeff = Z-core e-) down a group

dec bc both new protons and core e- are added, but the new valence e- have a bigger distance that decrease the overall force from nucleus

where are the valence e- most strongly attracted to nucleus/where is the biggest effective nuclear charge?

top right corner

what corner has the biggest atomic radius?

bottom left

what corner is ionisation energy biggest?

top right corner

what corner is electronegativity biggest?

top right

most to least electroneg atoms

foncle-brisch where n is about = cl and c is about = h.

what is the election affinity

change in E when gas phase atom attracts an e-

what corner is EA biggest?

top right

Zeff=

atomic # - core e-

elements in ___ are very similar due to having the same number of valence e-

groups

acids with H+atom strength (period + group)

increases left to right across a period, increases from top to bottom of a group