Calculating Electrons and Nucleons in \({}_{16}^{32}S^{2-}\) Ion
To determine the number of electrons (\(x\)) and nucleons (\(y\)) in the given sulfur ion, \({}_{16}^{32}S^{2-}\), we need to interpret the notation.
Understanding the Notation \({}_{Z}^{A}X^{charge}\)
- The subscript \(Z\) represents the atomic number (number of protons).
- The superscript \(A\) represents the mass number (total number of nucleons: protons + neutrons).
- The chemical symbol \(X\) represents the element.
- The superscript indicating the charge shows the net charge of the ion.
Determining the Number of Nucleons (\(y\))
The number of nucleons is the mass number (\(A\)). In \({}_{16}^{32}S^{2-}\), the mass number \(A\) is 32.
Therefore, \(y = 32\).
Determining the Number of Electrons (\(x\))
The atomic number \(Z\) is 16, which means a neutral sulfur atom has 16 protons and 16 electrons.
The ion has a charge of \(2-\). This indicates that the atom has gained 2 electrons compared to the neutral state.
Number of electrons (\(x\)) = Number of protons + Charge magnitude
Number of electrons (\(x\)) = \(16 + 2 = 18\).
Conclusion
Based on the calculations:
- Number of electrons (\(x\)) = 18
- Number of nucleons (\(y\)) = 32
This corresponds to the option where \(x = 18\) and \(y = 32\).
Important Questions from Atomic Structure
The four quantum numbers of the valence electron of potassium atom are:
An element with atomic number 103 has a nuclear charge of +103. So its charge would be balanced by ________.
An electron near the nucleus is strongly attracted by the nucleus and has _________.
How many emission spectrum for sodiumlie in the range 588 - 590 nm?
What is the atomic number of Bohrium which is named after physicist Niels Bohr, one of the founders of quantum theory?
