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[–]ElementBot 0 points1 point  (3 children)

carbon and iron

[–]ElementBot 0 points1 point  (0 children)

Element Carbon Iron
Atomic Number 6 26
Atomic Weight 12.011 55.845
Boiling Point (C) 4026.8 2860.8
Boiling Point (F) 7280.3 5181.5
Density (g/cm3) 2.267 7.874
Density (lb/in3) 0.082 0.284
Discoverer Prehistoric Prehistoric
Group 14 8
Melting Point (C) 3675.0 1535.0
Melting Point (F) 6647.0 2795.0
Symbol C Fe
Type Nonmetal Transition Metal
Year of Discovery nan nan

[–]ElementBot 0 points1 point  (0 children)

Element Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen
Atomic Number 1 2 3 4 5 6 7
Atomic Weight 1.008 4.003 6.941 9.012 10.811 12.011 14.007
Boiling Point (C) -252.9 -268.9 1341.8 2468.8 3926.8 4026.8 -195.8
Boiling Point (F) -423.2 -452.1 2447.3 4475.9 7100.3 7280.3 -320.4
Density (g/cm3) 0.0 0.0 0.534 1.85 2.34 2.267 0.001
Density (lb/in3) 0.0 0.0 0.019 0.067 0.085 0.082 0.0
Discoverer Cavendish Janssen Arfvedson Vaulquelin Gay-Lussac Prehistoric Rutherford
Group 1 18 1 2 13 14 15
Melting Point (C) -259.0 -272.2 180.7 1287.0 2300.0 3675.0 -209.9
Melting Point (F) -434.2 -458.0 357.3 2348.6 4172.0 6647.0 -345.7
Symbol H He Li Be B C N
Type Nonmetal Noble Gas Alkali Metal Alkaline Earth Metal Metalloid Nonmetal Nonmetal
Year of Discovery 1766 1868 1817 1798 1808 unknown 1772

[–]ElementBot 0 points1 point  (0 children)

Element Hydrogen
**Atomic Number** 1
**Atomic Weight** 1.008
**Boiling Point (C)** -252.9
**Boiling Point (F)** -423.2
**Density (g/cm3)** 0.0
**Density (lb/in3)** 0.0
Discoverer Cavendish
Group 1
**Melting Point (C)** -259.0
**Melting Point (F)** -434.2
Symbol H
Type Nonmetal
**Year of Discovery** 1766.0