H 1
Li 2
G 3
Bo 4
C 5
N 6
O 7

F 8
Na 9
Mg 10
Al 11
Si 12
P 13
S 14

Cl 15
K 16
Ca 17
Cr 19
Ti 18
Mn 20
Fe 21

Co & Ni 22
Cu 23
Zn 25
Y 24
In 26
As 27
Se 28

Br 29
Rb 30
Sr 31
Ce & La 33
Zr 32
Di & Mo 34
Ro & Ru 35

Pd 36
Ag 37
Cd 38
U 40
Sn 39
Sb 41
Te 43

I 42
Cs 44
Ba & V 45
Ta 46
W 47
Nb 48
Au 49

Pt & Ir 50
Os 51
Hg 52
Tl 53
Pb 54
Bi 55
Th 56

Ans: Berilium. The full form of G is glucinum