Question

define mass number and atomic number.how are these represented around the symbol of an element?the mass number and atomic number of a isotope of uranium(u) are 235 and 92 respectively.calculate the number of protons and neutrons in the nucleus of the atom.

Answer 1

mass no. is define as the total no. of protons and neutrons in a nucleus.
whereas atomic no. is define as a number of protons in the nucleus of an atom, which is characteristic of a chemical element and determines its place in the periodic table.
The atomic number of uranium is 92. The mass number for this isotope is 235
so . In a neutral atom, the number of electrons is equal to the number of protons. So there are 92 electrons and then finally, to figure out the number of neutrons, we subtract this number from the mass number. So we just need to do 235 minus 92.

Answer 2

•see, mass number = number of protons/electrons + number of neutrons.
•atomic number is defined as the electrons gained or lost by an element to attain a noble gas configuration.
•lastly, with the help of these you can solve any question related to elements!!
& you're welcome✨