0
What is an element called when it has same mass number and different atomic number?
Wiki User
∙ 12y ago
Answer: (A series of) isobars.
An example of a series of isobars would be 40S, 40Cl, 40Ar, 40K, and 40Ca (atom numbers from 16 to 20).
The nuclei of these elements all contain 40 nucleons, however they contain varying numbers of protons and neutrons. They are all (particular isotopes of) different elements.
Atomic number is tied to the number of protons an element has. Each element has a different number.
The mass number is the sum of the number of protons AND neutrons of a particular isotope of an element.
(The total mass is the avarage mass of all naturally occurring isotopes, thus including protons, neutrons, and electrons of those atoms)
Example:
Elements with atom number 6 (Carbon) and atom number 7 (Nitrogen) both have isotopes with mass number 14.
C-14 (6 protons with 8 neutrons) weights 14.00324 a.m.u. and
N-14 (7 protons with 7 neutrons) weights 14.00307 a.m.u.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
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.
