periodic table Flashcards
define electronegativity
the tendency of an atom in a molecule to attract the shared pair of electrons towards itself
define ionization energy
the energy required to remove an electron from neutral gaseous isolated atoms
define electron affinity
it is the amount of energy released while converting a neutral gaseous atom into a negatively charged ion by adding an electron
which element has the most metallic character
cesium
which element has the highest electronegativity
fluorine
which element has the highest electron affinity
chlorine
what decreases across a period
atomic size
metallic character
what increases down a group
atomic size
metallic character
what increases across a period
non metallic character
ionisation energy
electronegativity
electron affinity
what decreases down a group
non metallic character
ionisation energy
electronegativity
electron affinity
which element has the most non metallic
chlorine
name the element which may be placed in group 1 but is not a metal
hydrogen
largest atomic radius
ceasium
smallest atomic radius
hydrogen
why ionisation potential increases across a period
atomic size decreases
nuclear charge increases
