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4.002602 g/mol
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What is the lighter element hydrogen or helium?
Hydrogen. It's first on the periodic table, with usually a sigle proton, and an atomic weight of 1.00794.
What is the simble for helium?
The symbol of Helium is He. Helium's atomic number is 2.
What is the lightest weight element that is not a gas?
The lightest weight element that is not a gas at room temperature is lithium. It is a solid metal with a low density and atomic number 3.
What is Atomic number 2?
Atomic number 2 corresponds to the element Helium. Helium has 2 protons in its nucleus, making it the second element on the periodic table. It is a colorless, odorless gas and is the second most abundant element in the universe.
What is ligther helium or oxygen?
Helium---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
What is the helium weight?
Helium's atomic weight = 4 amu
What is the atomic weight of Helium atom?
Helium atom has 2 protons and 2 neutrons (that accounts for its atomic weight). The atomic weight of helium is 4.00260
What is the chemical mass for helium?
The atomic weight of helium is 4,002602(2).
How many amu's does helium have?
Helium has a standard atomic weight of 4.0026 atomic mass units (amu).
How can you figure out the number of neutrons in an atom?
You subtract the atomic number from the atomic weight. For example, if you have a helium atom and its atomic weight is 4 and you subtract its atomic number (2) the number of neutrons in the helium atom is 2.
How can you figure the numbers of neutrons in an atom?
You subtract the atomic number from the atomic weight. For example, if you have a helium atom and its atomic weight is 4 and you subtract its atomic number (2) the number of neutrons in the helium atom is 2.
What elements do helium make up?
The only element helium makes up is helium. Atomic number: 2 Atomic weight 4.00260 u (avg)
What has the same atomic number and atomic weight - nitrogen helium hydrogen argon?
hydrogen
What is the 2nd lightest element?
Helium is the second lightest element on the periodic table, with an atomic number of 2 and an atomic weight of approximately 4.0026 atomic mass units.
What is the biggest jump in atomic weights between consecutive elements on the periodic table?
The biggest jump in atomic weights between consecutive elements on the periodic table occurs between hydrogen (H) and helium (He). Hydrogen has an atomic weight of approximately 1.008, while helium has an atomic weight of approximately 4.0026. This significant increase is due to the addition of a neutron in the helium nucleus, which contributes to its higher atomic weight.
How much does helium weigh?
The density of helium is approx. 0,9 g/L.
What does the number 2 and 4003 mean of helium?
Helium has atomic number 2. That means the helium atom has 2 protons and two electrons. The standard atomic weight of helium is 4.002602, or 4.003 rounded to 3 decimal places.
