| I | II | III | IV |
|A B|A B|A B|A B|A B|
--------+-----------+-----------+-----------+-----------+-----------+
1 |H==1.008 | | | | |
2 |He=4 |Li=7.03 |Be=9.1 |B=11 |C=12 |
--------+-----------+-----------+-----------+-----------+-----------+
3 | Ne=20|Na=23.05 | Mg=24.36| AL=27.1| Si=28.4|
--------+-----------+-----------+-----------+-----------+-----------+
4 |A=39.9 |K=39.15 |Ca=40.1 |Sc=44.1 |Ti=48.1 |
| | | | | |
| | | | | |
--------+-----------+-----------+-----------+-----------+-----------+
5 | | Cu=63.6| Zn=65.4| Ga=70| Ge=72.5|
--------+-----------+-----------+-----------+-----------+-----------+
6 |Kr=81.8 |Rb=85.5 |Sr=87.6 |Y=89 |Zr=90.6 |
| | | | | |
| | | | | |
--------+-----------+-----------+-----------+-----------+-----------+
7 | | Ag=107.93| Cd=112.4| In=115| Sn=119|
--------+-----------+-----------+-----------+-----------+-----------+
8 |X=128 |Cs=132.9 |Ba=137.4 |La=138.9 |Ce=Yb* |
| | | | |140.25-173 |
| | | | | |
--------+-----------+-----------+-----------+-----------+-----------+
9 | Au=197.2| Hg=200| Tl=204.1| Pb=206.9| Bi=208.5|
--------+-----------+-----------+-----------+-----------+-----------+
10 | | |Ra=225 | |Th=232.5 |
--------+-----------+-----------+-----------+-----------+-----------+
| | R_{2}O | RO |R_{2}O_{3} | RO_{2} |
| | RH | RH_{2} | RH_{3} | RH_{4} |
--------+-----------+-----------+-----------+-----------+-----------+
==================part 2==============
--------+-----------+-----------+-----------+-----------+
Periods | GROUP | GROUP | GROUP | GROUP |
| V | VI | VII | VIII |
|A B|A B|A B| |
--------+-----------+-----------+----
|