;

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.

Facts

Helium
2
He
4.002602
Gas
Colorless
noble gas
18
helium family or neon family 
1
p
1s2
N/A
-268.93 °C
2
CAS7440-59-7
Neighborhood Elements of Helium
Lead
82
Pb
207.2
Solid
SlateGray
post-transition metal
14
carbon family 
6
p
[Xe] 4f14 5d10 6s2 6p2
327.46 °C
1749 °C
2, 8, 18, 32, 18, 4
CAS7439-92-1
Neighborhood Elements of Lead

History

History
The element Helium was discovered by Pierre Janssen in year 1895 in Sweden and United Kingdom. Helium derived its name from from the Greek word helios, meaning 'sun'
The element Lead was discovered by Middle East in year 4000 BC in unknown place. Lead derived its name derived its name from from English word (plumbum in Latin)

Presence: Abundance in Nature and Around Us

Ppb by weight (1ppb =10^-7 %)
0.23
0.23
N/A
5.5×10-7%
7.2×10-10%
N/A
1×10-6%
1×10-6%
1.4e-06
9.9e-06
3×10-9%
1.7e-06

Crystal Structure and Atomic Structure

31 pm
22.423540616247 cm3
32 pm
140 pm
0.007
helium Spectrum
424.2, 424.2, 424.2 pm
π/2, π/2, π/2
Fm_ 3m
225

Face Centered Cubic

helium Crystal Structure
154 pm
18.271604938272 cm3
147 pm
202 pm
0.171
lead Spectrum
495.08, 495.08, 495.08 pm
π/2, π/2, π/2
Fm_ 3m
225

Face Centered Cubic

lead Crystal Structure

Atomic and Orbital Properties

Atomic Number
Number of Electrons (with no charge)
Number of Protons
Mass Number
Number of Neutrons
Shell structure (Electrons per energy level)
Electron Configuration
Valence Electrons
Oxidation State
Atomic Term Symbol (Quantum Numbers)
Shell structure
2
2
2
4.002602
2.002602
2
1s2
1s2
 
1S0
helium Shells
82
82
82
207.2
125.2
2, 8, 18, 32, 18, 4
[Xe] 4f14 5d10 6s2 6p2
6s2 6p2
-4;-2;-1  1;2;3;4
3P0
lead Shells

Isotopes - Nuclear Properties

Isotopes
Naturally occurring stable isotopes:
3He, 4He.
Naturally occurring stable isotopes:
204Pb, 206Pb, 207Pb, 208Pb.

Chemical Properties: Ionization Energies and electron affinity

0
N/A
0 kJ/mol
2372.3, 5250.5 kJ/mol
4
2.33
35.1 kJ/mol
715.6, 1450.5, 3081.5, 4083, 6640 kJ/mol

Physical Properties

0.1785 g/l
22.423540616247

 

N/A
N/A
N/A
N/A


 

N/A
N/A
N/A

 

N/A
N/A
N/A

 

0.1513 W/(m K)
N/A

 

Diamagnetic
N/A
-5.9×10-9
-2.36×10-11
-1.05×10-9

 

1.000035

 

970 m/s
11.34 g/cm3
18.271604938272

 

16 GPa
5.6 GPa
46 GPa
0.44


 

1.5 MPa
N/A
38.3 MPa

 

4.8×106 S/m
2.1×10-7 m Ω
7.2

 

35 W/(m K)
0.0000289 K-1

 

Diamagnetic
N/A
-1.5×10-9
-3.11×10-10
-1.7e-05

 

N/A

 

1260 m/s

Thermal Properties - Enthalpies and thermodynamics

N/A
-268.93 °C
5.19 K
N/A

 

0.02 kJ/mol
0.083 kJ/mol
N/A
327.46 °C
1749 °C
N/A
7.2

 

4.77 kJ/mol
178 kJ/mol
N/A

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS7440-59-7
RTECSMH6520000
2.2
1963
N/A
0
N/A
1
0

 

N/A
N/A
CAS7439-92-1
RTECSOF7525000
N/A
3077
N/A
0
N/A
2
0

 

N/A
N/A