Question

Give me a list of the first 25 elements with their valencies and atomic mass. Also, include other important elements like gold, silver, mercury, iodine, lead, copper, iron and zinc.

Answer 1

A list of the first 25 elements with their valencies and atomic mass.

Element	Atomic Mass	Valencies
H	1	1
He	4	0
Li	7	1
Be	9	2
B	11	3
C	12	4
N	14	3.5
O	16	2
F	19	1
Ne	20	0
Na	23	1
Mg	24	2
Al	27	3
Si	28	4
P	31	3,5
S	32	2,4,6
Cl	39	1
Ar	39	0
K	40	1
Sc	44	3
Ti	47	2,3,4
V	50	2,3,4,5
Cr	51	2,3,4,5,6
Mn	54	2,3,4,5,6,7
Gold	196	1,2,3
Silver	107	1,2,3
Mercury	200	1,2
Iodine	126	1,3,5,7
Lead	207	2,4
Copper	63	1,2,3
Iron	55	2,3,4,6
zinc	65	2