Question

define mass number and atomic number.how are these represented around the symbol of an element?​

Answer 1

Answer:

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.

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Answer 2

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.

Mass Number(A) = Number of Protons + Number of Neutrons

An isotope of any element can be uniquely represented as AZX, where X is the atomic symbol of the element, A is the mass number and Z is the atomic number. The isotope of carbon that has 6 neutrons is therefore 126C.