Periodic Table Element Comparison: Compare Elements - Lead vs Helium

Compare Lead and Helium

Compare Lead and Helium on the basis of their properties, attributes and periodic table facts. Compare elements on more than 90 properties. All the elements of similar categories show a lot of similarities and differences in their chemical, atomic, physical properties and uses. These similarities and dissimilarities should be known while we study periodic table elements. You can study the detailed comparison between Lead vs Helium with most reliable information about their properties, attributes, facts, uses etc. You can compare Pb vs He on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.

Name	Lead	Helium
Atomic Number	82	2
Atomic Symbol	Pb	He
Atomic Weight	207.2	4.002602
Phase at STP	Solid	Gas
Color	SlateGray	Colorless
Metallic Classification	Post Transition Metal	Noble Gas
Group in Periodic Table	group 14	group 18
Group Name	carbon family	helium family or neon family
Period in Periodic Table	period 6	period 1
Block in Periodic Table	p -block	p -block
Electronic Configuration	[Xe] 4f14 5d10 6s2 6p2	1s2
Electronic Shell Structure (Electrons per shell)	2, 8, 18, 32, 18, 4	2
Melting Point	600.61 K	0 K
Boiling Point	2022 K	4.22 K
CAS Number	CAS7439-92-1	CAS7440-59-7
Neighborhood Elements	Neighborhood Elements of Lead	Neighborhood Elements of Helium

History	The element Lead was discovered by Africans in year 7000 BCE. Lead derived its name from English word (plumbum in Latin).	The element Helium was discovered by P. Janssen and N. Lockyer in year 1868 in Sweden and United Kingdom. Helium derived its name from the Greek word helios, meaning 'sun'.
Discovery	Africans (7000 BCE)	P. Janssen and N. Lockyer (1868)
Isolated	Abydos, Egypt (3800 BCE)	W. Ramsay,T. Cleve, and N. Langlet (1895)

Abundance in Universe	10 / 0.06	230000000 / 72000000
Abundance in Sun	10 / 0.07	230000000 / 74000000
Abundance in Meteorites	1400 / 100	- / -
Abundance in Earth's Crust	10000 / 1000	5.5 / 30
Abundance in Oceans	0.03 / 0.00090	0.0072 / 0.011
Abundance in Humans	1700 / 50	- / -

Atomic Volume	18.27 cm3/mol	22.4136 cm3/mol
Atomic Radius	154 pm	31 pm
Covalent Radius	147 pm	32 pm
Van der Waals Radius	202 pm	140 pm
Atomic Spectrum
Lattice Constant	495.08, 495.08, 495.08 pm	424.2, 424.2, 424.2 pm
Lattice Angle	π/2, π/2, π/2	π/2, π/2, π/2
Space Group Name	Fm_ 3m	Fm_ 3m
Space Group Number	225	225
Crystal Structure	Face Centered Cubic	Face Centered Cubic

Atomic Number	82	2
Number of Electrons (with no charge)	82	2
Number of Protons	82	2
Mass Number	207.2	4.002602
Number of Neutrons	125	2
Shell structure (Electrons per energy level)	2, 8, 18, 32, 18, 4	2
Electron Configuration	[Xe] 4f14 5d10 6s2 6p2	1s2
Valence Electrons	6s2 6p2	1s2
Oxidation State	2, 4	-
Atomic Term Symbol (Quantum Numbers)	3P0	1S0
Shell structure

Known Isotopes	178Pb, 179Pb, 180Pb, 181Pb, 182Pb, 183Pb, 184Pb, 185Pb, 186Pb, 187Pb, 188Pb, 189Pb, 190Pb, 191Pb, 192Pb, 193Pb, 194Pb, 195Pb, 196Pb, 197Pb, 198Pb, 199Pb, 200Pb, 201Pb, 202Pb, 203Pb, 204Pb, 205Pb, 206Pb, 207Pb, 208Pb, 209Pb, 210Pb, 211Pb, 212Pb, 213Pb, 214Pb, 215Pb	3He, 4He, 5He, 6He, 7He, 8He, 9He, 10He
Stable Isotopes	Naturally occurring stable isotopes: 204Pb, 206Pb, 207Pb, 208Pb	Naturally occurring stable isotopes: 3He, 4He
Neutron Cross Section	0.171	0.007
Neutron Mass Absorption	0.00003	0.00001

Valence or Valency	4	0
Electronegativity	2.33 Pauling Scale	-
Electron Affinity	35.1 kJ/mol	0 kJ/mol
Ionization Energies	1st: 715.6 kJ/mol 2nd: 1450.5 kJ/mol 3rd: 3081.5 kJ/mol 4th: 4083 kJ/mol 5th: 6640 kJ/mol	1st: 2372.3 kJ/mol 2nd: 5250.5 kJ/mol

Density	11.34 g/cm3	0.0001785 g/cm3
Molar Volume	18.27 cm3/mol	22.4136 cm3/mol
Elastic Properties
Young Modulus	16	-
Shear Modulus	5.6 GPa	-
Bulk Modulus	46 GPa	-
Poisson Ratio	0.44	-
Hardness - Tests to Measure of Hardness of Element
Mohs Hardness	1.5 MPa	-
Vickers Hardness	-	-
Brinell Hardness	38.3 MPa	-
Electrical Properties
Electrical Conductivity	4800000 S/m	-
Resistivity	2.1e-7 m Ω	-
Superconducting Point	7.2	-
Heat and Conduction Properties
Thermal Conductivity	35 W/(m K)	0.1513 W/(m K)
Thermal Expansion	0.0000289 /K	-
Magnetic Properties
Magnetic Type	Diamagnetic	Diamagnetic
Curie Point	-	-
Mass Magnetic Susceptibility	-1.5e-9 m3/kg	-5.9e-9 m3/kg
Molar Magnetic Susceptibility	-3.11e-10 m3/mol	-2.36e-11 m3/mol
Volume Magnetic Susceptibility	-0.000017	-1.05e-9
Optical Properties
Refractive Index	-	1.000035
Acoustic Properties
Speed of Sound	1260 m/s	970 m/s

CAS Number	CAS7439-92-1	CAS7440-59-7
RTECS Number	RTECSOF7525000	RTECSMH6520000
DOT Hazard Class	-	2.2
DOT Numbers	3077	1963
EU Number	-	-
NFPA Fire Rating	0	0
NFPA Hazards	-	-
NFPA Health Rating	2	1
NFPA Reactivity Rating	0	0
AutoIgnition Point	-	-
Flashpoint	-	-

Periodic Table Element Comparison: Compare Elements - Lead vs Helium

Compare Lead and Helium

Facts

History

Presence: Abundance in Nature and Around Us

Crystal Structure and Atomic Structure

Atomic and Orbital Properties

Isotopes and Nuclear Properties

Chemical Properties: Ionization Energies and electron affinity

Physical Properties

Elastic Properties

Hardness - Tests to Measure of Hardness of Element

Electrical Properties

Heat and Conduction Properties

Magnetic Properties

Optical Properties

Acoustic Properties

Thermal Properties - Enthalpies and thermodynamics

Enthalpies

Regulatory and Health - Health and Safety Parameters and Guidelines

Compare With Other Elements

Compare Lead with all Group 14 elements

Compare Lead with all Period 6 elements

Compare Lead with all Post Transition Metal elements

Compare Helium with all Group 18 elements

Compare Helium with all Period 1 elements

Compare Helium with all Noble Gas elements