Consider the isotope arsenic-76

How many protons are in an atom of this isotope?
33

What is the mass number of this isotope?
76

How many neutrons are in an atom of this isotope?
43

What is the atomic number of this isotope?
33

Give the nuclear symol
76/33 As

How many electrons does this isotope have when neutral
33

What is the atomic mass of this isotope?

75.919 u

To determine the number of protons in an atom of an isotope, you need to know its atomic number. The atomic number of an element represents the number of protons in its nucleus. In this case, the atomic number of arsenic (As) is 33, so an atom of the isotope arsenic-76 also contains 33 protons.

To find the mass number of an isotope, you need to add the number of protons and neutrons in the nucleus. For arsenic-76, the mass number is 76 because it has 33 protons and 43 neutrons.

To calculate the number of neutrons in an atom of an isotope, subtract the number of protons (atomic number) from the mass number. In this case, since arsenic-76 has 33 protons and a mass number of 76, it will have 43 neutrons.

The atomic number of an isotope is the same as the number of protons. Therefore, the atomic number of arsenic-76 is 33.

The nuclear symbol of an isotope includes the element symbol, the mass number, and the atomic number. For arsenic-76, the nuclear symbol will be written as 76/33 As.

When an atom is neutral, it has an equal number of protons and electrons. Since arsenic-76 has 33 protons (which are positively charged), it will also have 33 electrons (which are negatively charged) to maintain overall neutrality.

The isotope arsenic-76 has 33 protons and 43 neutrons. The atomic number of this isotope is 33, and its mass number is 76. The nuclear symbol for this isotope is 76/33 As. When neutral, this isotope also has 33 electrons.