http://www.techtunes.com.bd/tips-and-tricks/tune-id/191774 1A- H Li Na K Rb Cs Fr
2A- Be Mg Ca Sr Ba Ra - -
3A- B Al Ga In Ti -
4A- C Si Ge Sn Pb -
5A- N P As Sb() Bi - -
6A O S Se Te Po - -
7A (X)
F Cl Br I At
0 ( )
He Ne Ar Kr Xe() Rn
-
K Na Ca Mg Al Zn Fe Sn Pb H Cu, Hg, Ag, Pt, Au
Cu Hg Ag Pt Au
Ca Na Mg Ag Al
- Pb Na Ca K
D Cu Mn Cr Co Fe Ni Zn