test

zontally.

Period
1	2	3	4	5	6	7	Group
H 1	Li 3	Na 11	K 19	Rb 37	Cs 55	Fr 87	1 (IA)	Alkali metals
	Be 4	Mg 12	Ca 20	Sr 38	Ba 56	Ra 88	2 (IIA)	Alkaline earths
					La 57	Ac 89
					Ce 58	Th 90
					Pr 59	Pa 91
					Nd 60	U 92
					Pm 61	Np 93
					Sm 62	Pu 94
					Eu 63	Am 95
					Gd 64	Cm 96
					Tb 65	Bk 97
					Dy 66	Cf 98
					Ho 67	Es 99
					Er 68	Fm 100
					Tm 69	Md 101
					Yb 70	No 102
			Sc 21	Y 39	Lu 71	Lr 103	3 (IIIB)
			Ti 22	Zr 40	Hf 72	Rf 104	4 (IVB)
			V 23	Nb 41	Ta 73	Db 105	5 (VB)
			Cr 24	Mo 42	W 74	Sg 106	6 (VIB)
			Mn 25	Tc 43	Re 75	Bh 107	7 (VIIB)
			Fe 26	Ru 44	Os 76	Hs 108	8 (VIIIB)
			Co 27	Rh 45	Ir 77	Mt 109	9 (VIIIB)
			Ni 28	Pd 46	Pt 78	Ds 110	10 (VIIIB)
			Cu 29	Ag 47	Au 79	Rg 111	11 (IB)	Coinage Metals
			Zn 30	Cd 48	Hg 80	Uub 112	12 (IIB)
	B 5	Al 13	Ga 31	In 49	Tl 81	Uut 113	13 (IIIA)	Boron Group
	C 6	Si 14	Ge 32	Sn 50	Pb 82	Uuq 114	14 (IVA)	Carbon group
	N 7	P 15	As 33	Sb 51	Bi 83	Uup 115	15 (VA)	Pnictogens
	O 8	S 16	Se 34	Te 52	Po 84	Uuh 116	16 (VIA)	Chalcogens
	F 9	Cl 17	Br 35	I 53	At 85	Uus 117	17 (VIIA)	Halogens
He 2	Ne 10	Ar 18	Kr 36	Xe 54	Rn 86	Uuo 118	18 (VIIIA)	Noble gases

Chemical series of the periodic table

Alkali metals	Alkaline earth metals	Lanthanides	Actinides	Transition metals
Poor metals	Metalloids	Nonmetals	Halogens	Noble gases

Color coding for atomic numbers:

• Elements numbered in blue are liquids at Standard Temperature and Pressure (STP);