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  • all nuclei are made of protons & neutrons
  • protons & neutrons have almost the same mass
  • hydrogen's nucleus is one proton
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Q: When the atomic masses of different element are expressed in atomic mass unit they are found to be almost integer multiples of that of hydrogen atom why?
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When the atomic masses of different element are expressed in atomic mass unit they are mostly found to be almost integer multiples of hydrogen atom?

The atomic mass unit is 1/12 from the atomic mass of the isotope 12C.


What is the atom to which all others are compraed?

Atom or Element?If element it would be hydrogen.(The weights of the other elemnts are in exact multiples with hydrogen.)


Are isotopes atmos of hydrogen is of the same element or different elements?

The isotopes of hydrogen are all hydrogen. They have the same number of protons, or atomic number, which is unique to each element.


Is oxygen the same element as hydrogen?

No. They are two different elements.


Is a Hydrogen a element or a compound?

it's an element!


What are the elements in hydrogen?

Hydrogen is an element. So the only element in hydrogen is hydrogen.


Why are different amounts of each element required to react with the same amount of hydrogen?

Different elements have different valences which affect how many hydrogen atoms they will bind with.


What element's 3 isotopes have different names?

hydrogen, deuterium, and tritium.


How many electrons are there in an atom?

It is different for each element. In hydrogen, there is one.


What element is most abundant on the sun?

The element Hydrogen .


Is hydrogen a compound or an element or a homogenous or a heterogenous?

Hydrogen (H) is an element. Hydrogen gas (H2) is a molecule.


Is hydrogen different from water?

Yes. Hydrogen is an element. It usually exists as a light, highly flammable gas. Water is a compound of hydrogen and oxygen that can be produced by burning hydrogen.