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Label the mass number and atomic number for the symbol of gold below. How many protons and neutrons are in the nucleus of this isotope of gold?

a) Mass Number: 197, Atomic Number: 79, Protons: 79, Neutrons: 118
b) Mass Number: 197, Atomic Number: 79, Protons: 79, Neutrons: 118
c) Mass Number: 197, Atomic Number: 79, Protons: 79, Neutrons: 118
d) Mass Number: 197, Atomic Number: 79, Protons: 79, Neutrons: 118

Answer :

Final answer:

The atomic number of gold is 79 and its mass number is 197. This isotope of gold has 79 protons and 118 neutrons in its nucleus. we subtract the atomic number from the mass number: 197 - 79 = 118. Therefore, this isotope of gold has 79 protons and 118 neutrons in its nucleus.

Explanation:

The symbol for gold is Au. The atomic number (Z) for gold is 79, which means it has 79 protons in its nucleus. The mass number (A) for gold is 197, which represents the total number of protons and neutrons in the nucleus. To determine the number of neutrons, we subtract the atomic number from the mass number: 197 - 79 = 118. Therefore, this isotope of gold has 79 protons and 118 neutrons in its nucleus.

Gold, with an atomic number of 79, always has 79 protons, and to find the number of neutrons, we subtract the atomic number from the mass number: 197 - 79 = 118. Therefore, this isotope of gold has 79 protons and 118 neutrons in its nucleus. you subtract the atomic number from the mass number (197 - 79 = 118).

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