User:Neha ayaz

Name:	Hydrogen Symbol:	H Number:	1 Catagory:	Nonmetal Group:	1 Period:	1 Block:	s Standard Atomic Weight:	1.00794 g/mol Electron Configuration:	1s Electrons Per Shell:	1 Year Discovered:	1766 Discovered By:	Henry Cavendish Color:	colorless Phase:	gas Density:	0.0000899 g/cm³ Liquid Density at M.P.:	0.07 g/cm³ Liquid Density at B.P.:	0.07099 g/cm³ Melting Point:	14.01 K Boiling Point:	20.28 K Triple Point:	13.8033 K (-259 °C), 7.042 kPa Critical Point:	32.97 K, 1.293 MPa Superconduction Temperature:	N/A Heat of Fusion:	(H₂) 0.117 kJ/mol Heat of Vaporization:	(H₂) 0.904 kJ/mol Molar Heat Capacity:	(H₂) 28.836 J/(mol·K) Specific Heat:	14300 J/(kg⋅K) Oxidation States:	1, -1 (amphoteric oxide) Electronegativity:	2.20 Electron Affinity:	72.8 kJ/mol Valence:	1 Ionization Energies:	1st: 1312 kJ/mol Covalent Radius:	31±5 pm Calculated Radius:	53 pm Empirical Radius:	25 pm Atomic Radius:	N/A Van der Waals Radius:	120 pm Crystal Structure:	hexagonal Magnetic Ordering:	diamegnetic Thermal Conductivity:	0.1805 W/(m⋅K) Electrical Conductivity:	N/A Speed of Sound:	1310 m/s Young's Modulus:	N/A Shear Modulus:	N/A Bulk Modulus:	N/A Poisson Ratio:	N/A Mohs Hardness:	N/A Vickers Hardness:	N/A Brinell Hardness:	N/A Reflectivity:	N/A Refractive Index:	1.000132 CAS Registry Number:	1333-74-0 More Information:	Wikipedia