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When they are of the same element.
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Are all sample of elements are composed of atoms with same atomic mass?
All atoms in a pure sample of one element have the same mass. The atoms in a different element have a different mass. Different atoms is what makes different elements.
Does an isotope of an element have a different atomic mass?
Yes; isotopes of the same element have the same atomic number but differ in their atomic masses.
Can the atomic mass of individual atoms of an element vary?
No, the atomic mass of individual atoms of an element does not vary. The atomic mass listed on the periodic table is an average value that takes into account the different isotopes (atoms with different numbers of neutrons) of the element and their abundance in nature. Individual atoms of the same element will have the same atomic mass.
Which sample contains the same number of atoms as a gram atomic mass of he?
A gram atomic mass of helium (He) contains the same number of atoms as 1 mole of helium. Since 1 mole of any substance contains approximately 6.022 x 10^23 atoms, a sample of helium with a gram atomic mass would contain that same number of atoms.
Atomic mass is an atoms number of what?
it depends because isotopes have different nucleon numbers but their atomic number stays the same.
What are atoms of an element have the same atomic number but a different atomic mass?
isotope
What are atoms with the same atomic number but different mass called?
Atoms with the same atomic number are all atoms of the same element. However, if the atoms have different molecular weights, they are isotopes of the same element.
Are all sample of elements are composed of atoms with same atomic mass?
All atoms in a pure sample of one element have the same mass. The atoms in a different element have a different mass. Different atoms is what makes different elements.
Two atoms with the same atomic number but different atomic weight?
Atoms of the same element have different isotopes, differing only in number of neutrons (so differing in mass number, atomic mass).
Why is there an average atomic mass?
There is an average atomic mass because all atoms of the same element do not have the same amount of neutrons (isotopes), therefore variations in atomic mass exist. The average atomic mass of an element is the estimated average of all the atoms of the same element, given the average of different isotopes in a scientific sample.
How is it possible for two different atoms to have the same atomic mass?
They would have to be atoms of the same element, and the same isotope of that element.
What is the same as the atomic mass number of an element?
Atoms atomic number represents their number of protons.
What is isotopy?
is a phenomenom whereby atoms of the same compound have the same atomic number but different mass number
Why does sulfur and oxygen atoms have the same mass?
They don't. Sulphur has about twice the atomic mass of oxygen.
Does an isotope of an element have a different atomic mass?
Yes; isotopes of the same element have the same atomic number but differ in their atomic masses.
Can the atomic mass of individual atoms of an element vary?
No, the atomic mass of individual atoms of an element does not vary. The atomic mass listed on the periodic table is an average value that takes into account the different isotopes (atoms with different numbers of neutrons) of the element and their abundance in nature. Individual atoms of the same element will have the same atomic mass.
Can i say that elements of the same atoms having same atomic number but different atomic mass as isotopes?
Yes, you may say that.
