Trends and Patterns of Properties on the Periodic Table

 

Atomic Radii

Periodic Table of the Elements
   IA IIA IIIA IVA VA VIA VIIA VIIIA
   H  He
2 Li Be    B C N O F Ne
3 Na Mg IIIB IVB VB VI VIIB VIIIB IB IIB  Al Si P S Cl Ar
4 K Ca Sc  Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
5  Rb Sr  Y Zr Nb Mo Tc Ru Rh Pd  Ag  Cd  In Sn Sb Te I  Xe
6  Cs  Ba Lu  Hf Ta  W Re Os Ir  Pt Au  Hg Tl  Pb Bi Po At Rn

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Atomic size: decreases going from left right arrow right and from bottom right arrow top

 

 

 

plot of atomic radii versus atomic number

 

 

 

Periodic Table with Atomic Radii Trend arrow

 

 

 

 

 

 

First Ionization Energy

Periodic Table of the Elements
   IA IIA IIIA IVA VA VIA VIIA VIIIA
   H  He
2 Li Be    B C N O F Ne
3 Na Mg IIIB IVB VB VI VIIB VIIIB IB IIB  Al Si P S Cl Ar
4 K Ca Sc  Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
5  Rb Sr  Y Zr Nb Mo Tc Ru Rh Pd  Ag  Cd  In Sn Sb Te I  Xe
6  Cs  Ba Lu  Hf Ta  W Re Os Ir  Pt Au  Hg Tl  Pb Bi Po At Rn

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ionization energy: increases from left right arrow right and from bottom right arrow top.

 

 

 

plot of ionization energy versus atomic number

 

 

 

Periodic Table with ionization energies Trend arrow

 

 

 

 

 

 

 

 

 

 

 

 

 

Electronegativity

Electronegativity increases from left right arrow right and from bottom right arrow top.

 

 

 

plot of electronegativity versus atomic number

 

 

 

Periodic Table with Electronegativity Trend arrow

 

 

 

 

 

 

 

 

 

 

 

 

 

 

periodic table with highest density elements indicated by period

 

 

 

 

 

 

 

 

 

 

 

 

 

periodic table with highest melting point elements by period

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Electronic Configurations & Periodicity

Periodic Table of the Elements
   IA IIA IIIA IVA VA VIA VIIA VIIIA
   H  He
2 Li Be    B C N O F Ne
3 Na Mg IIIB IVB VB VI VIIB VIIIB IB IIB  Al Si P S Cl Ar
4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
5  Rb Sr  Y Zr Nb Mo Tc Ru Rh Pd  Ag  Cd  In Sn Sb Te I  Xe
6  Cs  Ba Lu Hf Ta  W Re Os Ir  Pt Au  Hg Tl  Pb Bi Po At Rn
  s1 s2 d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 p1 p2 p3 p4 p5 p6

What is the basis of the periodicity of properties?

Electrons are held in shells.

 

 

 

 

 

 

© R A Paselk

Last modified 27 March 2015