periodic trends Flashcards
as size decrease, it takes ___ energy to remove an electron because the nucleus is ____ to the electron
more
closer
ionization energy generally ____down a group
decrease
ionization
a measure of the difficulty in removing an electron from an atom or ion or the tendency of an atom or ion to surrender an electron.
Zeff increase, atomic size___
decrease
ionization energy generally ____ down a group
decrease
ionization energy generally _____across a period
increase
why more energy is needed to remove second election and ie2 is larger then ie1?
since this second electron is pulled away from a positive ion, more energy is required for its removal.
Because they are so____to remove, _____ are not involved in reactions
difficult
core electrons
ionization are always
positive values
degenerate
orbitals of the same energy
molecules or polyatomic ions made up of only nonmetal atoms are attached by
covalent bonds