what is helium gas? answer correctly
Share
what is helium gas? answer correctly
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Helium (He), chemical element, inert gas of Group 18 (noble gases) of the periodic table. The second lightest element (only hydrogen is lighter), helium is a colourless, odourless, and tasteless gas that becomes liquid at −268.9 °C (−452 °F).
Boiling point: −268.9 °C (−452 °F) number: 2Atomic weight: 4.002602
Boiling point: −268.9 °C (−452 °F)Atomic number: 2Atomic weight: 4.002602Electron configuration: 1s2
Explanation:
Helium (He), chemical element, inert gas of Group 18 (noble gases) of the periodic table. The second lightest element (only hydrogen is lighter), helium is a colourless, odourless, and tasteless gas that becomes liquid at −268.9 °C (−452 °F).
Boiling point: −268.9 °C (−452 °F)
Oxidation state: 0
Density (1 atm, 0 °C): 0.1785 gram/litre