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Element. All helium atoms have 2 protons. What is the atomic number of helium?
Wiki User
∙ 7y ago
The only atom that contains one proton is the hydrogen atom, also called protium. It is neutrally charged with a single proton at its nucleus, and a single electron orbiting. It is possible that you are asking about the isotope of hydrogen called tritium. Tritium is a radioactive isotope of hydrogen that contains a single proton and two neutrons.
Wiki User
∙ 14y ago
lenpollock
Wiki User
∙ 7y agoThe atomic number and the number of protons are the same thing, so the atomic number of helium is 2.
Wiki User
∙ 11y agotwo
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What tells the number of protons in the nucleus of an atom of an element?
The atomic number of the element refers to the number of protons of an atom: all atoms of an element have this number of protons. A neutral atom of the element will have the same number of electrons.
How do you find the number of protons using the periodic table?
look at the atomic number on the element because the atomic number and the number of protons are the same.carbon
What is the atomic number of this element helium?
The atomic number of helium (He) is 2.
The atomic number determines the what?
The number of protons.
The number of protons in an atom of an element?
It is equal to the no. of electrons in the atom. It is called the atomic number.
What is Atomic number 2?
Atomic number 2 is Helium, which has the symbol He
What does it mean if helium has mass?
atomic mass is the number of protons in that element molecule.
What is the symbol for 2 electrons and 2 protons?
Number protons equal to atomic number. So the element is Helium
What tells the number of protons in the nucleus of an atom of an element?
The atomic number of the element refers to the number of protons of an atom: all atoms of an element have this number of protons. A neutral atom of the element will have the same number of electrons.
How do you find the number of protons using the periodic table?
look at the atomic number on the element because the atomic number and the number of protons are the same.carbon
What has 2 electrons and 2 protons?
The atomic number of an element tells us that atom's number of protons. If the atom is neutral, its number of protons is going to equal its number of electrons. Thus, we need only find the element with the atomic number of 2, which is helium.
