Element	Symbol	Atomic number	Atomic mass	Element	Symbol	Atomic number	Atomic mass
Hydrogen	H	1	1.0079	Nickel	Ni	28	58.693
Helium	He	2	4.0026	Copper	Cu	29	63.546
Lithium	Li	3	6.941	Zinc	Zn	30	65.409
Beryllium	Be	4	9.0122	Gallium	Ga	31	69.723
Boron	B	5	10.811	Germanium	Ge	32	72.64
Carbon	C	6	12.011	Arsenic	As	33	74.922
Nitrogen	N	7	14.007	Selenium	Se	34	78.96
Oxygen	O	8	15.999	Bromine	Br	35	79.904
Fluorine	F	9	18.998	Krypton	Kr	36	83.798
Neon	Ne	10	20.180	Rubidium	Rb	37	85.468
Sodium	Na	11	22.990	Strontium	Sr	38	87.62
Magnesium	Mg	12	24.305	Palladium	Pd	46	106.42
Aluminium	Al	13	26.982	Silver	Ag	47	107.87
Silicon	Si	14	28.086	Cadmium	Cd	48	112.41
Phosphorus	P	15	30.974	Tin	Sn	50	118.71
Sulphur	S	16	32.065	Antimony	Sb	51	121.76
Chlorine	Cl	17	35.453	Tellurium	Te	52	127.60
Argon	Ar	18	39.948	Iodine	I	53	126.90
Pottasium	K	19	39.098	Xenon	Xe	54	131.29
Calcium	Ca	20	40.078	Caesium	Cs	55	132.91
Scandium	Sc	21	44.956	Barium	Ba	56	137.33
Titanium	Ti	22	47.867	Gold	Au	79	196.97
Vanadium	V	23	50.942	Mercury	Hg	80	200.59
Chromium	Cr	24	51.996	Lead	Pb	82	207.20
Manganese	Mn	25	54.938	Bismuth	Bi	83	208.98
Iron	Fe	26	55.845	Radium	Ra	88	226
Cobalt	Co	27	58.933	Thorium	Th	90	232.04

Element	Symbol	Atomic number	Atomic mass	Element	Symbol	Atomic number	Atomic mass
Hydrogen	H	1	1.0079	Nickel	Ni	28	58.693
Helium	He	2	4.0026	Copper	Cu	29	63.546
Lithium	Li	3	6.941	Zinc	Zn	30	65.409
Beryllium	Be	4	9.0122	Gallium	Ga	31	69.723
Boron	B	5	10.811	Germanium	Ge	32	72.64
Carbon	C	6	12.011	Arsenic	As	33	74.922
Nitrogen	N	7	14.007	Selenium	Se	34	78.96
Oxygen	O	8	15.999	Bromine	Br	35	79.904
Fluorine	F	9	18.998	Krypton	Kr	36	83.798
Neon	Ne	10	20.180	Rubidium	Rb	37	85.468
Sodium	Na	11	22.990	Strontium	Sr	38	87.62
Magnesium	Mg	12	24.305	Palladium	Pd	46	106.42
Aluminium	Al	13	26.982	Silver	Ag	47	107.87
Silicon	Si	14	28.086	Cadmium	Cd	48	112.41
Phosphorus	P	15	30.974	Tin	Sn	50	118.71
Sulphur	S	16	32.065	Antimony	Sb	51	121.76
Chlorine	Cl	17	35.453	Tellurium	Te	52	127.60
Argon	Ar	18	39.948	Iodine	I	53	126.90
Pottasium	K	19	39.098	Xenon	Xe	54	131.29
Calcium	Ca	20	40.078	Caesium	Cs	55	132.91
Scandium	Sc	21	44.956	Barium	Ba	56	137.33
Titanium	Ti	22	47.867	Gold	Au	79	196.97
Vanadium	V	23	50.942	Mercury	Hg	80	200.59
Chromium	Cr	24	51.996	Lead	Pb	82	207.20
Manganese	Mn	25	54.938	Bismuth	Bi	83	208.98
Iron	Fe	26	55.845	Radium	Ra	88	226
Cobalt	Co	27	58.933	Thorium	Th	90	232.04