Answer:
The correct answer is option D: 25 p⁺, 30 n⁰, 23 e⁻
Explanation:
Atomic notation represents an element's nucleus with its atomic number, mass number, and total charge.
[tex]^A_ZX^{m+}[/tex]
An ion is depicted above in a clear and succinct manner:
- The mass number, denoted by the letter A, indicates how many protons and neutrons there are in the nucleus overall.
- Z stands for the atomic number, which defines the identity of the element by identifying the number of protons in the nucleus.
- The element's chemical symbol, X, identifies its unique identification on the periodic table.
- The charge of the ion is represented by the symbol m+, where m represents the charge expressed in elementary charge units (e) and the plus sign denotes a positive charge.
Let's examine the provided ion now:
The element manganese (Mn) with a 2+ charge is indicated by the notation. This indicates that the manganese ion (Mn2+) now has a net positive charge of 2+ after losing two electrons.
Because manganese has an atomic number of 25, its nucleus contains 25 protons. Additionally, the nucleus of a neutral manganese atom would have 25 electrons orbiting it.
The 2+ ion, on the other hand, now has 25 protons and 23 electrons after losing two electrons.
Regarding the neutrons, their quantity can be ascertained by deducting the mass number (A) from the number of protons (the atomic number, Z). Consequently, there are (55 - 25 = 30) neutrons for the Mn.
Thus, to sum up:
- 25 protons
- 30 neutrons
- 23 electrons
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