Please enable JavaScript.
Coggle requires JavaScript to display documents.
Periodic Table - Coggle Diagram
Periodic Table
Across period
When across period
•proton no increased
•electronegative increased
•effective nuclear charge is increase •attraction of nucleus towards electron to its self stronger
•electronegativity longer
-
Group 17
Physical properties
•good insulator of heat
•low boiling and melting point
• halogen exist as diatomic molecule
Down a goup 1
•number of shell increase
•the shiellding effect will be larger •attraction between nucleus and outermost electron weaker
•size of atom is getting bigger
-
**Group 1
Physical properties
•good conductor
•low melting and boiling point of •good conductor heat and electricity
•low densities and float on surface of water
Blocks
-
-
blocks d
•3-12 electrons
•s and d-orbitals
•(n-1)d1ns2 and (n-1)d10ns2
•group 3-12
•23V:1s22s22p63s23p63d34s2
blocks f
•3-17 electrons
•f-orbitals
•(n-1)d1 ns 2 to (n-2)f14 (n-1)d 1 or 2 ns2
•Lanthanides& Actinides
•the filling of valence electron happens in the subshell of 4f and 5f
Periods
•the period in periodic table numbered 1 to 7
•period number:principle quantum number,n of the valence electrons in valance shell
Group number:
•number of valence electron if the element is in block s and block d
•number of valence elelctron =10 if the element is in block p
-