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The Atomic Mass of a helium atom is approximately 4 atomic mass units (amu). This value reflects the combined mass of its two protons and two neutrons, as helium has two protons in its nucleus and typically two neutrons. The mass of electrons is negligible compared to that of protons and neutrons, so it does not significantly affect the atomic mass. Thus, the expected atomic mass aligns closely with the sum of the nucleons in the helium nucleus.
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What is the atomic radius of helium?
31 pm This is not correct the best answer for helium would be 0.0 or n/a Helium also has no covalent radius. The atomic volume of helium is 31.8
How many neutrons would you expect to find in a helium atom?
There are several isotopes of Helium and they have different numbers of neutrons. The simplest and most common is Helium-4 which has two neutrons
What element is for times the atomic mass of helium?
Well, two times four is eight, which would be oxygen.
What gas element has an atomic mass less than 30 is not neon and is a noble gas?
helium (He)
Do alpha prarticle share the same atomic number?
An alpha particle is, essentially, a helium nucleus.This means that is has the same atomic number (no. of protons) as Helium does - it just doesn't have the electrons as well.So the atomic number of an alpha particle would be 2.It's also not neutral, and would have a 2+ charge.The mass number of an alpha particle would be 4 as it has 2 neutrons and 2 protons.All alpha particles are helium nuclei, so they all share the same properties.
Explain what gasses would you expect to behave most ideally He Ar or HCl?
Helium
What is the atomic radius of helium?
31 pm This is not correct the best answer for helium would be 0.0 or n/a Helium also has no covalent radius. The atomic volume of helium is 31.8
How many neutrons would you expect to find in a helium atom?
There are several isotopes of Helium and they have different numbers of neutrons. The simplest and most common is Helium-4 which has two neutrons
What element is for times the atomic mass of helium?
Well, two times four is eight, which would be oxygen.
What atomic mass would you expect eksilicon to have?
3 asses
What is the atomic number o an atom that has 2 protons and 3 neutrons?
2 (helium). With 3 neutrons it would be Helium-5 which is the most unstable radioisotope of helium.
What gas element has an atomic mass less than 30 is not neon and is a noble gas?
helium (He)
Do alpha prarticle share the same atomic number?
An alpha particle is, essentially, a helium nucleus.This means that is has the same atomic number (no. of protons) as Helium does - it just doesn't have the electrons as well.So the atomic number of an alpha particle would be 2.It's also not neutral, and would have a 2+ charge.The mass number of an alpha particle would be 4 as it has 2 neutrons and 2 protons.All alpha particles are helium nuclei, so they all share the same properties.
What would you expect to find composite volcanoes on Mars?
What would you expect to find composite volcanoes on Mars? Explain why.
Is oxygen lighter than helium?
no. If it was, we would have oxygen balloons instead of helium balloons.
How many gram does one mole of helium gas weighs?
By definition, one mole would be the same as the atomic mass. You take the number of moles and multiply it by the atomic mass (divide by one mole for units to cancel). So if you have just 1 mole, the number of grams will be the atomic mass. Helium's atomic mass is 4.003 grams.
What has 2 electrons 2 neutrons and 2 protons?
An atom with 2 protons is naturally Helium. Therefore, this isotope would be called helium - 5 because it has 5 particles in its nucleus, 2 protons and 3 neutrons.
