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When an element have different atomic number and the same mass number what is it called?
Wiki User
∙ 12y ago
Do you mean same atomic number and different mass numbers? If so then these are known as ISOTOPES. All atoms of any given element will have the same atomic number (number of protons in the nucleus) as this is what makes the element what it is. It is the number of neutrons in the nucleus which varies and hence the mass number (the number of protons plus the number of neutrons). For eg Carbon has three ISOTOPES - carbon-12, carbon-13 and carbon-14. They all have atomic number of 6 (6 protons in their nucleii) but have different numbers of neutrons (6, 7 or 8 respectively) and therefore different mass numbers.
Wiki User
∙ 12y ago
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What is it called when they have same atomic number but different mass?
They are called isotopes of the same element
What do you call atoms of the same element with different atomic masses?
They are called isotopes. They have different mass nmbers because they have a different number of neutrons.
How are the atomic mass and the atomic number different?
the atomic mass is the number of protons and neutrons in an atom of an element and the atomic number is the number of protons of an atom of an element.
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.
Why is an atomic form of an element called when it contains the same number or protons but different number of neutrons?
istope
What is it called when they have same atomic number but different mass?
They are called isotopes of the same element
What do you call atoms of the same element with different atomic masses?
They are called isotopes. They have different mass nmbers because they have a different number of neutrons.
How are the atomic mass and the atomic number different?
the atomic mass is the number of protons and neutrons in an atom of an element and the atomic number is the number of protons of an atom of an element.
Can atoms of different elements have the same number of protons be from the same element?
No. Each type of atom (element) has its own unique number of protons, which is called the atomic number. Atoms of the same element will always have the same atomic number (number of protons). Atoms of different elements will never have the same atomic number (number of protons).
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.
What do you called in an element having the same atomic number but different atomic masses?
Isotopes. eg U235 and U238. Both Uranium, atomic number 92, bur different isotopes.
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.
Atoms of the same atomic are called what?
isotopes Atoms of the same element are called Isotopes. they have the same number of atoms (i.e. same atomic number) but different number of neutrons
Why is an atomic form of an element called when it contains the same number or protons but different number of neutrons?
istope
Why do two isotopes of an element have the same atomic number but differnent mass number?
Because the atomic number is the number of protons in an element. If you change the atomic number you will have a completely different element. The mass number changes because the number of neutrons is different.
What does the number of elements tell you?
The number is called the element's atomic number. The atomic number is the number of protons in the nucleus of the atom of that element.
Do isotopes of the same element have different atomic numbers?
NO. An element always has its own unique atomic number, because the atoms of that element all have identical amounts of protons. Counting the number of protons in a nucleus of an atom reveals the identity of the atom. So, all atoms of the same element have the same atomic number.However atoms of one element CAN have a different masscaused by different number of neutrons in nucleus: these are called isotopes of that element.No. The only thing that can change within an given element, is the atomic mass usually referred to as isotopes, which means there is a different abundance of each isotope.For example chlorine has two isotopes one which is 75.78% and a atomic mass of 34.969 and the second is 24.22% and a atomic mass of 36.966.Now calculate the average atomic mass and you have a answer of 35.45.
