Cams note 1.5 flash cards
Electronegativity
an atom’s ability to attract electrons in bonds
electron affinity
the ability of an atom to attract electrons and the energy required. used in ions.
Ionization energy
the energy required to remove an electron from an atom/ how difficult to pull of an electron.
atomic radius
the distance between the nucleus and the outer most electron.
Why dose Electronegativity increase when going across
The number of protons in the nucleus increases , which pulls electrons closer to the nucleus.
why does electronegativity decrease going down
the nucleus is farther from the valance electrons because more shells are being added decreasing its ability to attract.
why does the atomic radius decrease when going across
nuclear charge pulls electrons closer with out adding more shells.
why does the atomic radius increase when going down
new shells/ energy levels are added making the size increase.
why does the Ionization energy increase when going across
increasing nuclear charge pulls electrons closer to the nucleus making them hard to remove.
why does the ionization energy decrease when going down
more energy levels/shells are added increasing atoim size making electrons easy to remove.
why does the electron affinity become negative going across
it increasing nuclear charge pulls added electrons more strongly.
why does electron affinity become less negative going down
larger atomic size weakens the attraction force for the electrons.
