Asked in ChemistryElements and Compounds
Elements and Compounds
What is the element with mass number 235?
Asked in Chemistry, Periodic Table
Uranium with a mass of 235 would have what atomic number?
What are the mass numbers of the particles making up Cl with mass number 235?
Asked in Chemistry
What does the number represent in the isotope Uranium 235?
Asked in Chemistry, DIY Projects
How do you find hyphen notation?
It is the element, hyphen, then the mass number. Example: Uranium-235 Knowing this, we can conclude that the mass number of Uranium is 235. If we look at the atomic number of Uranium, which is 92, we know that Uranium has it has 92 protons, 92 electrons (unless it has a charge other than zero), and 143 neutrons (Mass number - Atomic number).
Asked in Elements and Compounds, Uranium
What is the atomic number for uranium 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.
Asked in Chemistry, The Difference Between
One way of showing the difference between isotopes of an element is to put the mass where?
Uranium 235 has how many neutrons?
Asked in Atomic Mass
What is the atomic number and atomic mass of U-235?
What is the difference between an atomic number and mass number of an element?
Asked in Symbolism and Symbolic Meanings, Atoms and Atomic Structure, Scientific Notation, Atomic Mass
How do you write an atom in scientific notation?
What is the mass number of an element?
The mass number of an element is the total mass of atoms in an element (i.e protons, electron and neutrons). If you were to look on a periodic table element square the mass number is the number above the element letter while the number below is the atomic number E.g. If you look on a periodic table the mass number of Oxygen (O) is 16.0 mass number is the atomic mass of a particular isotope