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A copper atom has an atomic number of 29 and an atomic mass of 64. What
is the structure of this atom?
A. It has a central nucleus composed of 29 protons and 29 neutrons,
surrounded by an electron cloud containing 35 electrons.
B. It has a central nucleus composed of 29 protons and 35 neutrons,
surrounded by an electron cloud containing 29 electrons.
C. It has a central nucleus composed of 35 protons and 29 neutrons,
surrounded by an electron cloud containing 29 electrons.
D. It has a central nucleus composed of 29 protons and 64 neutrons,
surrounded by an electron cloud containing 29 electrons.
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prosser

The answer is B. It has a central nucleus composed of 29 protons and 35 neutrons, surrounded by an electron cloud containing 29 electrons.

Eduard22sly

Given the data from the question, the correct statement is:

  • It has a central nucleus composed of 29 protons and 35 neutrons, surrounded by an electron cloud containing 29 electrons (Option B)

Composition of atom

An atom is composed of a centrally placed nucleus (containing protons and neutrons) and a cloud of electrons revolving round it.

How to determine the number of neutrons

  • Mass number = 64
  • Proton = 29
  • Neutron =?

Mass number = Proton + Neutron

64 = 29 + Neutron

Collect like terms

Neutron = 64 – 29

Neutron = 35

Note

Proton = Electron = 29 (since the atom is neutral)

Thus, we can conclude that the atom has central nucleus composed of 29 protons and 35 neutrons, surrounded by an electron cloud containing 29 electrons  (Option B)

Learn more about composition of atoms:

https://brainly.com/question/886387

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