Template:Periodic table (standard atomic weight)/sandbox

Standard atomic weight (abridged, conventional*)^[1] v t e
	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
Group →
↓ Period
1	H 1.0080																	He4.0026
2	Li6.94	Be9.0122											B 10.81	C 12.011	N 14.007	O 15.999	F 18.998	Ne20.180
3	Na22.990	Mg24.305											Al26.982	Si28.085	P 30.974	S 32.06	Cl35.45	Ar39.95
4	K 39.098	Ca40.078	Sc44.956	Ti47.867	V 50.942	Cr51.996	Mn54.938	Fe55.845	Co58.933	Ni58.693	Cu63.546	Zn65.38	Ga69.723	Ge72.630	As74.922	Se78.971	Br79.904	Kr83.798
5	Rb85.468	Sr87.62	Y 88.906	Zr91.224	Nb92.906	Mo95.95	Tc[97]	Ru101.07	Rh102.91	Pd106.42	Ag107.87	Cd112.41	In114.82	Sn118.71	Sb121.76	Te127.60	I 126.90	Xe131.29
6	Cs132.91	Ba137.33	La138.91	Hf178.49	Ta180.95	W 183.84	Re186.21	Os190.23	Ir192.22	Pt195.08	Au196.97	Hg200.59	Tl204.38	Pb207.2	Bi208.98	Po[209]	At[210]	Rn[222]
7	Fr[223]	Ra[226]	Ac[227]	Rf[267]	Db[268]	Sg[267]	Bh[270]	Hs[271]	Mt[278]	Ds[281]	Rg[282]	Cn[285]	Nh[286]	Fl[289]	Mc[290]	Lv[293]	Ts[294]	Og[294]

				Ce140.12	Pr140.91	Nd144.24	Pm[145]	Sm150.36	Eu151.96	Gd157.25	Tb158.93	Dy162.50	Ho164.93	Er167.26	Tm168.93	Yb173.05	Lu174.97
				Th232.04	Pa231.04	U 238.03	Np[237]	Pu[244]	Am[243]	Cm[247]	Bk[247]	Cf[251]	Es[252]	Fm[257]	Md[258]	No[259]	Lr[266]
* Standard atomic weight				The formal standard atomic weight may look like 4.002602(2) for helium, and [1.0078, 1.0082] for hydrogen. The "(n)" is the uncertainty.
Abridged				The value is abridged to five significant figures. The ± uncertainty is noted as "(x)", or "(1)" when omitted. See abridged standard atomic weight.
Conventional				When the formal standard atomic weight is an interval, like [1.0078, 1.0082], a simple, single number is published too. See conventional standard atomic weight.
* Mass number				Unstable elements do not have a standard atomic weight. These have the mass number shown of the most stable isotope (formatted [210]).