VERY GOOD INTERACTIVE PERIODIC TABLE :

CLICK ON THE ABOVE LINK FOR A VERY GOOD INTERACTIVE PERIODIC TABLE.

SOME PHYSICAL CONSTANTS:

	Constant	Symbol	Value	Units
1	Speed of light in vacuum	(c)	299792458	m s-1
2	Permeability of vacuum	(mu_0)	1.25663706143592e-06	N A-2
3	Permittivity of vacuum	(epsilon_0)	8.854187817e-12	F m-1
4	Newtonian constant of gravitation	(G)	6.6725985e-11 ± 8.54093e-15	m3 kg-1 s-2
5	Planck constant	(h)	6.62607554e-34 ± 3.97565e-40	J s
6	Planck constant in eV		4.135669212e-15 ± 1.2407e-21	eV s
7	h-bar	(h-bar)	1.0545726663e-34 ± 6.32744e-41	J s
8	h-bar in eV		6.58212202e-16 ± 1.97464e-22	eV s
9	Planck mass	(m_p)	2.1767114e-08 ± 1.3931e-12	kg
10	Planck length	(l_p)	1.616051e-35 ± 1.03427e-39	m
11	Planck time	(t_p)	5.3905634e-44 ± 3.44996e-48	s
12	Elementary charge	(e)	1.6021773349e-19 ± 4.80653e-26	C
13	Magnetic flux quantum	(Phi_0)	2.0678346161e-15 ± 6.2035e-22	Wb
14	Josephson frequency-voltage quotient		483597671400000 ± 1.45079e+08	V-1 s-1
15	Quantized Hall conductance		3.8740461417e-05 ± 1.74332e-12	Omega-1
16	Quantized Hall resistance	(R_H)	25812.805612 ± 0.00116158	Omega
17	Bohr magneton	(mu_B)	9.274015431e-24 ± 3.15317e-30	J T-1
18	Bohr magneton in eV		5.7883826352e-05 ± 5.15166e-12	eV T-1
19	Bohr magneton in Hz		13996241842 ± 4198.87	T-1 s-1
20	Bohr magneton in wavenumbers		46.68643714 ± 1.40059e-05	m-1 T-1
21	Bohr magneton in kelvins		0.671709957 ± 5.70953e-06	K T-1
22	Nuclear magneton	(mu_N)	5.050786617e-27 ± 1.71727e-33	J T-1
23	Nuclear magneton in eV		3.1524516628e-08 ± 2.80568e-15	eV T-1
24	Nuclear magneton in Hz		7622591.423 ± 2.28678	T-1 s-1
25	Nuclear magneton in wavenumbers		0.025426228177 ± 7.62787e-09	m-1 T-1
26	Nuclear magneton in kelvins		0.000365824631 ± 3.10951e-09	K T-1
27	Fine structure constant	(alpha)	0.0072973530833 ± 3.28381e-10
28	Inverse fine structure constant		137.035989561 ± 6.16662e-06
29	Rydberg constant	(Ry)	10973731.53413 ± 0.0131685	m-1
30	Rydberg constant in Hz		3.289841949939e+15 ± 3.94781e+06	s-1
31	Rydberg constant in joules		2.179874113e-18 ± 1.30792e-24	J
32	Rydberg constant in eV		13.60569814 ± 4.08171e-06	eV
33	Bohr radius	(a_0)	5.2917724924e-11 ± 2.3813e-18	m
34	Hartree energy	(E_h)	4.359748226e-18 ± 2.61585e-24	J
35	Hartree energy in eV		27.211396181 ± 8.16342e-06	eV
36	Quantum of circulation		0.00036369480733 ± 3.23688e-11	m2 s-1
37	Electron mass	(m_e)	9.109389754e-31 ± 5.37454e-37	kg
38	Electron mass in u		0.00054857990313 ± 1.26173e-11	u
39	Electron mass in eV		510999.0615 ± 0.1533	eV
40	Electron-muon mass ratio		0.0048363321871 ± 7.2545e-10
41	Electron-proton mass ratio		0.00054461701311 ± 1.08923e-11
42	Electron-deuteron mass ratio		0.0002724437076 ± 5.44887e-12
43	Electron-alpha-particle mass ratio		0.0001370933543 ± 2.87896e-12
44	Electron specific charge		-175881962530 ± -52764.6	C kg-1
45	Electron molar mass		5.4857990313e-07 ± 1.26173e-14	kg mol-1
46	Electron Compton wavelength	(lambda_C)	2.4263105822e-12 ± 2.15942e-19	m
47	Electron Compton wavelength over 2 pi	(lambda-bar_C)	3.8615932335e-13 ± 3.43682e-20	m
48	Electron classical radius	(r_e)	2.8179409238e-15 ± 3.66332e-22	m
49	Electron Thomson cross section	(sigma_e)	6.652461618e-29 ± 1.79616e-35	m2
50	Electron magnetic moment		9.284770131e-24 ± 3.15682e-30	J T-1
51	Electron magnetic moment in Bohr magnetons		1.0011596521931 ± 1.00116e-11
52	Electron magnetic moment in nuclear magnetons		1838.28200037 ± 3.67656e-05
53	Electron magnetic moment anomaly	(a-e)	0.0011596521931 ± 9.97301e-12
54	Electron g-factor	(g_e)	2.0023193043862 ± 2.00232e-11
55	Electron-muon magnetic moment ratio		206.7669673 ± 3.1015e-05
56	Electron-proton magnetic moment ratio		658.210688166 ± 6.58211e-06
57	Muon mass		1.883532711e-28 ± 1.14895e-34	kg
58	Muon mass in u		0.11342891317 ± 1.70143e-08	u
59	Muon mass in eV		105658389.34 ± 33.8107	eV
60	Muon-electron mass ratio		206.7682623 ± 3.10152e-05
61	Muon molar mass		0.00011342891317 ± 1.70143e-11	kg mol-1
62	Muon magnetic moment		4.490451415e-26 ± 1.48185e-32	J T-1
63	Muon magnetic moment in Bohr magnetons		0.0048419709771 ± 7.26296e-10
64	Muon magnetic moment in nuclear magnetons		8.890598113 ± 1.33359e-06
65	Muon magnetic moment anomaly	(a_mu)	0.001165923084 ± 8.39465e-09
66	Muon g-factor	(g_mu)	2.00233184617 ± 1.68196e-08
67	Muon-proton magnetic moment ratio		3.1833454747 ± 4.77502e-07
68	Proton mass	(m_p)	1.67262311e-27 ± 9.86848e-34	kg
69	Proton mass in u		1.00727647012 ± 1.20873e-08	u
70	Proton mass in eV		938272312.8 ± 281.482	eV
71	Proton-electron mass ratio		1836.15270137 ± 3.67231e-05
72	Proton-muon mass ratio		8.880244413 ± 1.33204e-06
73	Proton specific charge		95788309.29 ± 28.7365	C kg-1
74	Proton molar mass		0.00100727647012 ± 1.20873e-11	kg mol-1
75	Proton Compton wavelength	(lambda_Cp)	1.3214100212e-15 ± 1.17605e-22	m
76	Proton magnetic moment		1.4106076147e-26 ± 4.79607e-33	J T-1
77	Proton magnetic moment in Bohr magnetons		0.00152103220215 ± 1.52103e-11
78	Proton magnetic moment in nuclear magnetons		2.79284738663 ± 6.42355e-08
79	Diamagnetic shielding correction for protons (H_2 O, spherical sample, 298.15 K)	(sigma_H2O)	2.568915e-05
80	Shielded proton moment (H_2 O, spherical sample, 298.15 K)	(mu_p')	1.4105713847e-26 ± 4.79594e-33	J T-1
81	Shielded proton moment in Bohr magnetons		0.00152099312917 ± 1.67309e-11
82	Shielded proton moment in nuclear magnetons		2.79277564264 ± 6.42338e-08
83	Proton gyromagnetic ratio	(gamma_p)	267522128.81 ± 80.2566	T-1 s-1
84		(gamma_p)	42577469.13 ± 12.7732	T-1 s-1
85	Proton gyromagnetic ratio, uncorrected (H_2 O, spherical sample, 298.15 K)	(gamma_p')	267515255.81 ± 80.2546	T-1 s-1
86		(gamma_p'/2pi)	42576375.13 ± 12.7729	T-1 s-1
87	Neutron mass	(m_n)	1.67492861e-27 ± 9.88208e-34	kg
88	Neutron mass in u		1.00866490414 ± 1.41213e-08	u
89	Neutron mass in eV		939565632.8 ± 281.87	eV
90	Neutron-electron mass ratio		1838.6836624 ± 4.0451e-05
91	Neutron-proton mass ratio		1.0013784049 ± 9.01241e-09
92	Neutron molar mass		0.00100866490414 ± 1.41213e-11	kg mol-1
93	Neutron Compton wavelength	(lamda_Cn)	1.3195911012e-15 ± 1.17444e-22	m
94	Neutron magnetic moment		9.66237074e-27 ± 3.96157e-33	J T-1
95	Neutron magnetic moment in Bohr magnetons		0.0010418756325 ± 2.5005e-10
96	Neutron magnetic moment in nuclear magnetons		1.9130427545 ± 4.5913e-07
97	Neutron-electron magnetic moment ratio		0.0010406688225 ± 2.49761e-10
98	Neutron-proton magnetic moment ratio		0.6849793416 ± 1.64395e-07
99	Deuteron mass	(m_d)	3.34358602e-27 ± 1.97272e-33	kg
100	Deuteron mass in u		2.01355321424 ± 2.41626e-08	u
101	Deuteron mass in eV		1875613395.7 ± 562.684	eV
102	Deuteron-electron mass ratio		3670.48301475 ± 7.34097e-05
103	Deuteron-proton mass ratio		1.9990074966 ± 5.99702e-09
104	Deuteron molar mass		0.00201355321424 ± 2.41626e-11	kg mol-1
105	Deuteron magnetic moment	(mu_d)	4.330737515e-27 ± 1.47245e-33	J T-1
106	Deuteron magnetic moment in Bohr magnetons		0.000466975447991 ± 8.87253e-12
107	Deuteron magnetic moment in nuclear magnetons		0.85743823024 ± 2.40083e-08
108	Deuteron-electron magnetic moment ratio		0.000466434546091 ± 8.86226e-12
109	Deuteron-proton magnetic moment ratio		0.307012203551 ± 5.21921e-09
110	Avagadro constant	(N_A)	6.022136736e+23 ± 3.55306e+17	mol-1
111	Atomic mass constant	(m_u)	1.66054021e-27 ± 9.79719e-34	kg
112	Atomic mass constant in eV		931494322.8 ± 279.448	eV
113	Faraday constant	(F)	96485.30929 ± 0.0289456	C mol-1
114	Molar Planck constant		3.9903132336e-10 ± 3.55138e-17	J s mol-1
115		(N_A hc)	0.1196265811 ± 1.06468e-08	J m mol-1
116	Molar gas constant	(R)	8.3145107 ± 6.98419e-05	J mol-1 K-1
117	Boltzmann constant	(k)	1.38065812e-23 ± 1.17356e-28	J K-1
118	Boltzmann constant in eV		8.61738573e-05 ± 7.2386e-10	eV K-1
119	Boltzmann constant in Hz		20836741800 ± 175029	K-1 s-1
120	Boltzmann constant in wavenumbers		69.5038759 ± 0.000583833	m-1 K-1
121	Molar volume (ideal gas), STP	(V_m)	0.0224141019 ± 1.88278e-07	m3 mol-1
122	Loschmidt constant	(n_0)	2.68676323e+25 ± 2.28375e+20	m-3
123	Stefan-Boltzmann constant	(sigma)	5.6705119e-08 ± 1.92797e-12	W m-2 K-4
124	First radiation constant	(c_1)	3.741774922e-16 ± 2.24506e-22	W m2
125	Second radiation constant	(c_2)	0.0143876912 ± 1.20857e-07	m K
126	Wien displacement law constant	(b)	0.00289775624 ± 2.43412e-08	m K
127	Electron volt	(eV)	1.6021773349e-19 ± 4.80653e-26	J
128	Atomic mass unit	(u)	1.66054021e-27 ± 9.79719e-34	kg
129	Standard atmosphere	(atm)	101325	Pa
130	Standard acceleration of gravity	(g_n)	9.80665	m s-2
131	BIPM-maintained ohm, Omega_69-B1 as of 1 Jan 85	(Omega_B185)	1-1.56350e-6	Omega
132	Drift rate of Omega_69-B1	(dOmega_69-B1/dt)	-0.056615	muOmega/yr
133	BIPM-maintained volt 483 694 GHz(h/2e)	(V_76-B1)	1-7.5930e-6	V
134	BIPM maintained ampere A_BIPM	(A_B185)	1-6.0330e-6	A
135	Cu x-unit:	(xu(CuKalpha1))	1.002077897e-13 ± 7.01455e-20	m
136	Mo x-unit:	(xu(MoKalpha1))	1.0020993845e-13 ± 4.50945e-20	m
137	AA *:	(AAngstrom-star)	1.0000148192e-10 ± 9.20014e-17	m
138	Lattice spacing of Si (in vacuum, 295.65 K)	(a)	5.431019611e-10 ± 1.14051e-16	m
139	Lattice spacing Si (220) plane	(d_220)	1.920155404e-10 ± 4.03233e-17	m
140	Molar volume of Si	(V_m(Si))	1.2058817989e-05 ± 8.92353e-12	m3 mol-1

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