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They both have neutrons, protons and electrons.
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∙ 9y ago
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What type of atomic reaction occurs on the sun?
Hydrogen + Helium=BLAST=Hydrogen+Helium=BLAST=Hydrogen+Helium=BLAST=_ _ _ _ _ _ _ _ _ and so on
What has the same atomic number and atomic weight - nitrogen helium hydrogen argon?
hydrogen
Is the element with the least atomic mass hydrogen or is it helium?
The answer is Hydrogen.
Which element has the smallest atomic radius hydrogen or helium?
It is hydrogen.
What is the atomic sign for helium on the periodic table?
He is the symbol for helium
Gas giants have atmospheres composed primarily of helium and what?
Hydrogen and helium, the most common elements in the Universe.Hydrogen and helium, the most common elements in the Universe.Hydrogen and helium, the most common elements in the Universe.Hydrogen and helium, the most common elements in the Universe.
Which elements have the smallest atomic mass?
Hydrogen and Helium
What is the element with the least atomic mass is hydrogen or helium?
Hydrogen's atomic mass (1 amu for the most stable isotope) is less than that of helium (4 amu).
Which element has the smallest atomic number helium carbon nitrogen hydrogen?
Hydrogen.
Does hydrogen or helium have the least atomic mass?
Hydrogen has the lowest atomic mass of all the elements. Hydrogen has one proton and one electron. Helium, two neutrons, two protons and two electrons.
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.
What two elements are common in the sun?
The two common elements found in the sun are Hydrogen and Helium.
