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hel, He, 2 (łac. helium) Grupa, okres, blok 18 (VIIIA), 1, s. Stopień utlenienia: 0 Właściwości metaliczne gaz szlachetny. Masa atomowa: 4,0026 ± 0,0001. Stan skupienia: gazowy Gęstość: 0,1785 kg/m³. Temperatura wrzenia: −268,928 °C. Numer CAS: 7440-59-7. PubChem: 23987
13 paź 2023 · Helium gas Formula: Helium chemical formula is He, with an atomic number of 2, making it the second lightest and first noble gas on the periodic table.
19 gru 2023 · This element is represented by He, which is also the chemical formula for Helium gas. Its atomic number is 2. It is the first noble gas in the periodic table, which means it is an inert gas.
28 lip 2023 · Helium Gas Formula. Helium is a non-metallic gas with the formula \(\text{He}\). The atomic number of helium is 2, and its atomic mass is 4.003 g/mol. It is a colorless, odorless, and tasteless gas which liquefies at a very low temperature of -268.9 ℃. It is a non toxic and non combustible gas.
The boiling point of helium is at a temperature of -268.928 °C. Moreover, the melting point of helium is at a temperature of -272.2°C. This gas is very slightly soluble in water: 0.97 mL/100 mL at a temperature of 0 °C and 1.08 mL/100 mL at a temperature of 50 °C. Furthermore, this gas is insoluble in ethanol.
Helium Gas Formula is a non-toxic and non-combustible element. Its atomic number is 2. In the periodic table, it is the first noble gas, making it an inert gas.
Helium (from Greek: ἥλιος, romanized: helios, lit. 'sun') is a chemical element; it has symbol He and atomic number 2. It is a colorless, odorless, non-toxic, inert, monatomic gas and the first in the noble gas group in the periodic table.
