periodic trends Flashcards
the periodic law
When elements are arranged in order of increasing atomic number, there is a periodic repetition of their chemical and physical properties
where do the atomic sizes increase?
down and to the left
why are the atomic sizes larger when going down?
higher energy levels = higher orbitals
what are the 7 diatomic elements
H
N
F
O
I
Cl
B
where is the melting/boiling point the highest?
in the middle
what is ionization energy
amount of energy required to completely remove an electron from a gaseous atom
where does ionization energy increase
upwards and to the right
why is ionization energy opposite to atomic radius?
e- are closer to the nucleus in small atoms so attraction is stronger
electronegativity
atom attracts electrons to itself when combined with another atom.
where does electronegativity increase?
upwards and to the right
