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Q: What has the same atomic number and atomic weight - nitrogen helium hydrogen argon?
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Related questions

Which element has the smallest atomic number helium carbon nitrogen hydrogen?

Hydrogen.


What is the atomic number of ammonium?

Ammonium is a polyatomic ion, not an element and thus it does not have an atomic number. It is composed of nitrogen and hydrogen and has the formula NH4+. Nitrogen has the atomic number 7. Hydrogen has the atomic number 1.


What are ten elements?

The first 10 elements, in order of atomic number, are: Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon


What determines the atomic number for hydrogen?

The atomic number of all elements including Hydrogen is detemined by the number of protons it has for example, Helium's atomic number is 2 because it only has 2 protons.


Is hydrogens atomic number greater than heliums?

Hydrogen has atomic number 1 whereas helium's is 2.


What atoms is the most stable helium atomic number 2 oxygen atomic number 8 hydrogen atomic number 1 fluorine atomic number 9?

Helium 2, its first ring of electrons is fully saturated


What is helium in relation to hydrogen?

The atomic number of helium is one more than that of hydrogen. In both the elements, the electrons are filled in the 1s orbitals. Hydrogen has one electron, helium has two.


Which one has fewer protons Nitrogen or Helium?

The periodic table is a good reference - check out the atomic number ! Helium - 2 protons, Nitrogen - 7 protons


What element has a atomic number lower than alumimum?

There are 12 such elements and they are hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, neon, sodium and magnesium.


Element. All helium atoms have 2 protons. What is the atomic number of helium?

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.


Is helium the lighest element?

No, Hydrogen is lighter than Helium. However, Helium is the 2nd lightest element with an atomic number of 2.


What is atomic number for amonia?

Ammonia is a molecule, NH3, so there is no atomic number. However, the atomic number of nitrogen (N) is 7 and the atomic number of hydrogen (H) is 1.