Answer :
The correct answer is In, 49 protons, 49 electrons.
Let's analyze each option:
1. F, 19 protons, 19 electrons:
Fluorine (F) has an atomic number of 9, which means it has 9 protons and, in its neutral state, 9 electrons. Therefore, the information given for fluorine is incorrect.
2. Cs, 55 protons, 132.9 electrons:
Cesium (Cs) has an atomic number of 55, which means it has 55 protons. In its neutral state, it would also have 55 electrons. The number of electrons given (132.9) is incorrect and does not make sense for a neutral atom, as the number of electrons must be an integer. Therefore, this option is incorrect.
3. Zn, 30 protons, 60 electrons:
Zinc (Zn) has an atomic number of 30, which means it has 30 protons. In its neutral state, it would have 30 electrons. The number of electrons given (60) suggests a 2+ charge, which would be correct for a Zn^2+ ion. However, the question asks for the number of electrons in the neutral atom, so this option is incorrect.
4. In, 49 protons, 49 electrons:
Indium (In) has an atomic number of 49, which means it has 49 protons. In its neutral state, it would also have 49 electrons. Therefore, the information given for indium is correct for a neutral atom.
In conclusion, the only option that correctly matches the symbol of the element with the correct number of protons and electrons for a neutral atom is indium (In), with 49 protons and 49 electrons.
Final answer:
The correct set which aligns the symbol of the element with the number of protons, and the number of electrons correctly is F, 19 protons, 19 electrons. Fluorine (F) has an atomic number of 19, thus it contains 19 protons and in a neutral state, 19 electrons.
Explanation:
The correct answer is the first option: F, 19 protons, 19 electrons. This is the symbol for Fluorine. In a neutral atom, the number of protons (which determine the element and are also known as the atomic number) and electrons are equal. Fluorine has an atomic number of 19, thus 19 protons and 19 electrons. The other sets contain numbers of electrons that do not match the atomic number of the element, which is inaccurate for a neutral atom.
Learn more about Atomic Structure here:
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