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