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The atomic number of helium is 2. Its mass is 4.002602 u ± 0.000002 u
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What does the mass number in helium represent?
The mass number in helium represents the total number of protons and neutrons in the nucleus of a helium atom. It is used to determine the mass of the atom and differentiate between different isotopes of helium.
What is the mass of a single atom of helium?
The atomic mass of Helium is 4.002602. The atomic mass is the combined number of protons and neutrons in the atom.
What is the atom if the mass is 2.67x10-24 g?
There is no atom with that mass. Even hydrogen, the lightest element, has an atomic mass of 1.674 x 10 ^ -21 g
What is the atomic number of a helium atom?
The atomic number of Helium is 2 because there are 2 protons and 2 electrons.
What is the mass of calcium atom compared with the mass of helium atom?
The mass of a calcium atom is around 40 atomic mass units (u), while the mass of a helium atom is around 4 atomic mass units (u). Therefore, the mass of a calcium atom is 10 times greater than the mass of a helium atom.
An atom of helium has a mass about four times greater than that of an atom of hydrogen Which choice makes the correct comparison of the relative numbers of helium and hydrogen atoms in equal masses o?
An equal mass of helium would contain fewer atoms compared to hydrogen, as each helium atom is four times heavier than a hydrogen atom. This is because the atomic mass of a helium atom is roughly four times that of a hydrogen atom.
What is the mass of a calcium atom compared with the mass of a helium atom?
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Draw atom with mass number 4 and atomic number 2?
Helium is a non metal element. Atomic mass number of it is 4.
What has a greater number of atoms a gram of lead or a gram of uranium?
The lead atom is way heavier than the helium atom. We know this by referring to the Periodic Table of Elements. The atomic mass of lead (Pb) is 207, while that of helium (He) is 4. Therefore, we can estimate that an atom of lead is about 50 times heavier than an atom of helium.
Is a lead atom heavier than a helium atom?
Yes, a lead atom is heavier than a helium atom. Lead has an atomic number of 82, while helium has an atomic number of 2. Atomic number represents the number of protons in an atom's nucleus, and since lead has more protons than helium, it is heavier. Additionally, lead has a higher atomic mass (207.2 amu) compared to helium (4.0026 amu), further confirming that lead is indeed heavier than helium.
If an atom were to have two protons then it would?
It would by definition be Helium (atom number = number of protons = 2) but the nucleus of the stable isotope 4He also contains 2 neutrons (the mass number = total number of p's and n's = 4)
Where is the mass number of an isotope of this atom that has 2 neutrons?
If you think to tritium (hydrogen-3) the mass number is 3.If you think to helium-4 the mass number is 4.
