Which statement about the species 63Cu2+ and 65Cu+ is correct?A. Both species have the same number of protons.B. Both species have the same number of electrons.C. Both species have the same number of neutrons.D. Both species have the same electron arrangement
Question
Which statement about the species 63Cu2+ and 65Cu+ is correct?A. Both species have the same number of protons.B. Both species have the same number of electrons.C. Both species have the same number of neutrons.D. Both species have the same electron arrangement
Solution
The correct statement about the species 63Cu2+ and 65Cu+ is A. Both species have the same number of protons.
Here's why:
A. Both species have the same number of protons: This is correct. The atomic number, which is the number of protons in an atom, defines the element. Both 63Cu2+ and 65Cu+ are isotopes of Copper (Cu), which has an atomic number of 29. Therefore, they both have 29 protons.
B. Both species have the same number of electrons: This is incorrect. 63Cu2+ has lost 2 electrons, while 65Cu+ has lost 1 electron. Therefore, they do not have the same number of electrons.
C. Both species have the same number of neutrons: This is incorrect. The number of neutrons in an atom is given by the atomic mass number (the superscript number) minus the atomic number (number of protons). So, 63Cu2+ has 63-29=34 neutrons, while 65Cu+ has 65-29=36 neutrons. Therefore, they do not have the same number of neutrons.
D. Both species have the same electron arrangement: This is incorrect. The electron arrangement depends on the number of electrons, which is different for 63Cu2+ and 65Cu+. Therefore, they do not have the same electron arrangement.
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