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H2O has 10 protons.
Hydrogen has 1 proton, so 2 hydrogen have 2 protons.
Oxygen has 8 protons.
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoHelium has an atomic number of 2... Thus Helium has 2 protons.
Wiki User
∙ 8y agoAll hydrogen atoms, regardless of the number of neutrons in its isotope (zero neutrons for protium, one for deuterium, two for tritium), would have only one proton.
Wiki User
∙ 8y agoHydrogen is a nonmetal gas. An atom has 1 proton and one electron.
Wiki User
∙ 8y agoIT IS DIFFERENT WITH THE ELEMENT. uSE THE ATOMIC NUMBER OF ELEMENT.
Wiki User
∙ 13y agoOnly 1. Hydrogen is the smallest atom.
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How many protons do the elements beryllium and helium have?
beryllium has 4 protons. helium has 2 protons
How many protons do the elements beryllium and helium each have?
beryllium has 4 protons and helium has 2 protons
What is the symbol for 2 electrons and 2 protons?
Number protons equal to atomic number. So the element is Helium
How many protons do lutetium have?
An element's atomic number gives its number of protons. Lutetium's atomic number is 71. Thus, it has 71 protons.
An alpha particle is composed of which subatomic particles?
A Helium Nucleus so 2 protons and 2 neutrons Quarks are contained within the neutrons & protons and there are many types
How many numbers of protons are in helium?
2 protons as its atomic number is 2
Helium has how many protons?
Helium has 2 protons.
How electrons does a helium atom have?
2 electrons. The atomic number is the number of protons and however many protons there are, that is also the number of electrons.
What does the number 2 indicate in helium?
2 is the atomic number (or the number of protons) of helium.
How many protons do the elements beryllium and helium have?
beryllium has 4 protons. helium has 2 protons
What is the number of protons of helium?
Helium is number 2 on the Periodic Table, and the number of its mass is 4. So, therefore it has 2 protons, 2 neutrons, and 2 electrons !
Why does helium have an atomic number of 2 and atomic mass of 4?
An atom's atomic weight is the total of all protons and neutrons in its nucleus. Helium almost always contains two protons and two neutrons. Therefore, its atomic weight is 2 + 2 = 4.
What is the number of protons in helium?
2
How many protons have helium?
2 protons
How many protons do the elements beryllium and helium each have?
beryllium has 4 protons and helium has 2 protons
What is the symbol for 2 electrons and 2 protons?
Number protons equal to atomic number. So the element is Helium
What is helium's number of electrons?
Helium has 2 protons and 2 electrons.
