Periodic Table Element Comparison: Compare Elements - Helium vs Lead

Compare Helium and Lead

Compare Helium and Lead 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 Helium vs Lead with most reliable information about their properties, attributes, facts, uses etc. You can compare He vs Pb on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.

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

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

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

Atomic Volume	22.4136 cm3/mol	18.27 cm3/mol
Atomic Radius	31 pm	154 pm
Covalent Radius	32 pm	147 pm
Van der Waals Radius	140 pm	202 pm
Atomic Spectrum
Lattice Constant	424.2, 424.2, 424.2 pm	495.08, 495.08, 495.08 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	2	82
Number of Electrons (with no charge)	2	82
Number of Protons	2	82
Mass Number	4.002602	207.2
Number of Neutrons	2	125
Shell structure (Electrons per energy level)	2	2, 8, 18, 32, 18, 4
Electron Configuration	1s2	[Xe] 4f14 5d10 6s2 6p2
Valence Electrons	1s2	6s2 6p2
Oxidation State	-	2, 4
Atomic Term Symbol (Quantum Numbers)	1S0	3P0
Shell structure

Known Isotopes	3He, 4He, 5He, 6He, 7He, 8He, 9He, 10He	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
Stable Isotopes	Naturally occurring stable isotopes: 3He, 4He	Naturally occurring stable isotopes: 204Pb, 206Pb, 207Pb, 208Pb
Neutron Cross Section	0.007	0.171
Neutron Mass Absorption	0.00001	0.00003

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

Density	0.0001785 g/cm3	11.34 g/cm3
Molar Volume	22.4136 cm3/mol	18.27 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	0.1513 W/(m K)	35 W/(m K)
Thermal Expansion	-	0.0000289 /K
Magnetic Properties
Magnetic Type	Diamagnetic	Diamagnetic
Curie Point	-	-
Mass Magnetic Susceptibility	-5.9e-9 m3/kg	-1.5e-9 m3/kg
Molar Magnetic Susceptibility	-2.36e-11 m3/mol	-3.11e-10 m3/mol
Volume Magnetic Susceptibility	-1.05e-9	-0.000017
Optical Properties
Refractive Index	1.000035	-
Acoustic Properties
Speed of Sound	970 m/s	1260 m/s

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

Periodic Table Element Comparison: Compare Elements - Helium vs Lead

Compare Helium and Lead

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 Helium with all Group 18 elements

Compare Helium with all Period 1 elements

Compare Helium with all Noble Gas elements

Compare Lead with all Group 14 elements

Compare Lead with all Period 6 elements

Compare Lead with all Post Transition Metal elements