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How many neutrons are there in an atom of uranium whose mass number is 235?
Like all isotopes of uranium (identified by the "mass number" following the element name--235, in this case), U 235 has the atomic number 92. An element name is really just a more memorable way to designate a specific atomic number. This is because different isotopes with the same atomic number such as U 238 (the common type) and U 235 (a rare type)--or, to take a more common example, Carbon 12 (the common kind) and the slightly radioactive Carbon 14 (extremely rare), share the same number of electrons with all weights of the element. To put it another way, an isotope identified by a mass number (235 or 238) is just a slightly leaner or heavier version of the same atomic number. So, even though U 238 has three more neutrons in its nucleus than does U 235, the two have the same atomic number; which is just another way of saying they are the same element. The number of electrons determines how an element behaves chemically and that's how element names are assigned. Elements are sorted by chemical interaction characteristics, not by weight: weight. The mass number (in this question, 235) is a subdivision of element/atomic number. If an element has the same name, but a different mass number, all elements with that name share the same atomic number.
How do you find hyphen notation?
Hyphen Notation is the name of the element, then hyphen, then the mass number written after the element. For example, Chlorine-35.
What is the mass number for the element uranium?
The atomic weight of uranium is 238,02891(3) atomic mass units. The mass number is the total number of nucleons (protons an neutrons) in the nucleus; the mass number is different for each isotope: 234U: mass number 234 235U: mass number 235 238U: mass number 238
How many Electrons in uranium 235?
Because the atomic mass of this isotope is approx. 235 atomic units of mass.
What are the number of neutrons in an atom with mass number 235 and atomic number 92?
235-92 = 143
How many neutrons are there in an atom of uranium whose mass number is 235?
Like all isotopes of uranium (identified by the "mass number" following the element name--235, in this case), U 235 has the atomic number 92. An element name is really just a more memorable way to designate a specific atomic number. This is because different isotopes with the same atomic number such as U 238 (the common type) and U 235 (a rare type)--or, to take a more common example, Carbon 12 (the common kind) and the slightly radioactive Carbon 14 (extremely rare), share the same number of electrons with all weights of the element. To put it another way, an isotope identified by a mass number (235 or 238) is just a slightly leaner or heavier version of the same atomic number. So, even though U 238 has three more neutrons in its nucleus than does U 235, the two have the same atomic number; which is just another way of saying they are the same element. The number of electrons determines how an element behaves chemically and that's how element names are assigned. Elements are sorted by chemical interaction characteristics, not by weight: weight. The mass number (in this question, 235) is a subdivision of element/atomic number. If an element has the same name, but a different mass number, all elements with that name share the same atomic number.
How do you find hyphen notation?
Hyphen Notation is the name of the element, then hyphen, then the mass number written after the element. For example, Chlorine-35.
What are the mass numbers of the particles making up Cl with mass number 235?
Any isotope of chlorine has the mass number 235.
How do you use hyphen notation for each isotope?
Hyphen notation for isotopes involves writing the element name or symbol followed by a hyphen and then the mass number. For example, carbon-14 is written as C-14 and uranium-235 is written as U-235. This notation helps differentiate between different isotopes of the same element.
What is the mass number for the element uranium?
The atomic weight of uranium is 238,02891(3) atomic mass units. The mass number is the total number of nucleons (protons an neutrons) in the nucleus; the mass number is different for each isotope: 234U: mass number 234 235U: mass number 235 238U: mass number 238
One way of showing the difference between isotopes of an element is to put the mass where?
Examples for the natural fissile uranium isotope: 1. Recommended notation: 23592U; 235 is the mass, 92 is the atomic number. 2. Alternative notation: U-235 or uranium-235.
How many Electrons in uranium 235?
Because the atomic mass of this isotope is approx. 235 atomic units of mass.
What are the number of neutrons in an atom with mass number 235 and atomic number 92?
235-92 = 143
How is an isotope and mass number related?
It isn't, as such. Isotopes of the same element have different numbers of neutrons, and neutrons have a mas of one atomic mass unit (amu). So isotopes have different atomic masses, but being told the number of neutrons any isotope has, will not enable you to say what element or atomic mass it had, unless you remembered the details for every single isotope. Even then different elements can have the same number of neutrons. Isotopes do get named after their atomic mass however - uranaium 235 has an atomic mass of 235, for instance.
How many neutrons does U-235 have?
Uranium 235 has 92 protons and 92 electrons. To find the number of neutrons, follow this equation: Mass # - Atomic # = # of neutrons. Since the mass number of uranium 235 is 235 and has an atomic number of 92, the number of neutrons is 143.
What is the mass number of uranium-235?
The atomic mass of uranium 238 is 238,050 788 247
How do you write an atom in scientific notation?
There are many alternatives; for example (denoting the element atom by A):A-mass number; e.g U-235, orAmass number, oratomic numberAmass number; , 92U235
