Textbook Question
Determine the number of protons and the number of neutrons in each isotope. d. 20882Pb
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Ch.2 - Atoms & Elements
Chapter 2, Problem 56
Determine the number of protons and neutrons in uranium-235, which is used in nuclear fission, and write its symbol in the form AZX.
Verified step by step guidance1
Identify the atomic number (Z) of uranium, which is 92. This number represents the number of protons in the nucleus.
Recognize that the mass number (A) of uranium-235 is 235. This number is the sum of protons and neutrons in the nucleus.
Calculate the number of neutrons by subtracting the atomic number (Z) from the mass number (A): Neutrons = A - Z.
Write the symbol for uranium-235 in the form A^ZX, where A is the mass number, Z is the atomic number, and X is the chemical symbol for uranium (U).
Combine the information to express uranium-235 as 235^92U, indicating its composition of protons and neutrons.
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