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physical object > natural object > particle > element > column grouped element > inert gas > neon > neon 21

neon 21 (21Ne)
subject			fact

neon 21	has symbol 21Ne
	has natural abundance 0.27
	has NMR frequency 7.894 MHz where 1H = 100 MHz; 2.3488 T
	has nuclear quadrupole moment 0.10155 × 10-28 m2
	has magnetogyric ratio -2.1118 × × 107 rad T-1 s-1
	has NMR receptivity 0.0359 where 13C = 1.00
	has relative NMR sensitivity 2.50 × 10-3 where 1H = 1.00
	has nuclear magnetic moment μ = -0.661796 nuclear magnetons with diamagnetic correction
	has nuclear spin I = 3/2+ h/2π
	has number of nucleons 21
	has number of neutrons 11
	has atomic mass 20.993843
	has uses Nuclear Magnetic Resonance
	is an instance of neon
neon	has reserves 6.5 × 1010 tonnes in atmosphere
	has mineral none
	has neutron scattering length × 10-12 cm
	has electron affinity -29 kJ mol-1 from Ne to Ne-
	has toxic intake non-toxic
	has mass magnetic susceptibility -4.2 × 10-9 kg-1 m3 for solid
	has van der Waals radii 160 pm
	has thermal neutron capture cross section 0.040 barns
	has longest lived isotope neon 20
	has isotope mass range 17 to 25
	has number of isotopes 9 including nuclear isomers
	has pronunciation nee-on
	has name origin neon = new from Greek
	has discovery location London, England
	has abundance 3.72 × 107 in Sun relative to H = 1 × 1012
	has abundance 7 × 10-5 p.p.m. in Earth's crust
	has abundance 2 × 10-4 p.p.m. in seawater
	has specimen small pressurized canisters. Safe.
	has world production 1 ton year-1
	has chief source liquid air
	has mass absorption coefficient cm2 g-1 for CuKα X-ray diffraction
	has mass absorption coefficient cm2 g-1 for MoKα X-ray diffraction
	has space group Fm3m
	has crystal cell dimension a = 445.462 pm
	has crystal type f.c.c
	has atomic emission line 837.761 nm for Ne I
	has atomic emission line 865.438 nm for Ne I (strong)
	has atomic emission line 878.062 nm for Ne I
	has atomic emission line 878.375 nm for Ne I
	has atomic emission line 885.387 nm for Be I
	has term symbol 1S0 in ground state
	has electron configuration [He]2s22p6 in ground state
	has mass of element in person tiny for a 70 kg average person
	has daily dietary intake low
	has level in humans trace mg dm-3 in blood
	has level in humans nil in bone
	has level in humans nil in liver
	has level in humans nil in muscle
	has hazard harmless gas, although it could asphyxiate if it excluded oxygen from the lungs
	has biological role none
	has thermal conductivity 0.0493 W m-1 K-1 for gas at 300 K
	has molar volume 13.97 cm3
	has heat capacity 20.786 J K-1 mol-1 for gas at constant pressure 0.1 MPa at 298.15 K
	has heat of vaporization 1.736 kJ mol-1
	has heat of fusion 0.324 kJ mol-1
	has boiling point 27.10 K
	has melting point 24.48 K
	has relative atomic mass 20.1797 in units of 12C = 12.000
	has number of protons 10
	has registry number 7440-01-9 for Chemical Abstracts System database
	has density 1444 kg m-3 for solid at 24.48 K melting point
	has density 1207.3 kg m-3 for liquid at 27.10 K boiling point
	has density 0.89994 kg m-3 for gas at 273 K
	has synthesis mechanism liquid air
	has ocean oxidation state 0
	has atomic number 10
	reacts with nothing
	has discovery date 1898
	has discoverer Sir William Ramsay and M.W. Travers
	has image
	has critical pressure 2721 kPa
	has critical temperature 44.5 K
unclassified oceanic element	has ocean residence time unknown
	has ocean concentration unknown
inert gas	has group 18
	has synonym group VIII element
	has synonym noble gas
oceanic element	has occurrence ocean
atmophile element	has occurrence atmosphere of a planet or asteroid
gaseous element	has state gas at standard temperature and pressure
element	is a part of Universe
particle	obeys uncertainty principle
	has frequency inversely proportional to the wavelength
	has wavelength inversely proportional to its momentum
	has charge
	has mass
physical object	has location or center of gravity
	has angular momentum
	has velocity
	has momentum
	has temperature
	has volume
	has extent
	has material

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