At Westonci.ca, we make it easy to get the answers you need from a community of informed and experienced contributors. Get immediate answers to your questions from a wide network of experienced professionals on our Q&A platform. Discover detailed answers to your questions from a wide network of experts on our comprehensive Q&A platform.

How many protons, neutrons, and electrons are in this ion?

[tex]\[ { }_{80}^{204} Hg ^{2+} \][/tex]

A. [tex]\( 80 p^{+}, 124 n^0, 78 e^- \)[/tex]

B. [tex]\( 102 p^{+}, 102 n^0, 104 e^- \)[/tex]

C. [tex]\( 80 p^{+}, 124 n^0, 80 e^- \)[/tex]

D. [tex]\( 80 p^{+}, 124 n^0, 82 e^- \)[/tex]


Sagot :

Certainly! Let's carefully determine the number of protons, neutrons, and electrons in the given ion [tex]\( \,_{80}^{204}\text{Hg}^{2+} \)[/tex].

### 1. Number of Protons:
The atomic number (Z) represents the number of protons in the atom. For mercury (Hg), the atomic number is 80. Therefore, the number of protons ([tex]\( p^{+} \)[/tex]) is:
[tex]\[ 80 \, p^{+} \][/tex]

### 2. Number of Neutrons:
The mass number (A) of an atom is the sum of the number of protons and neutrons. For this mercury isotope, the mass number is 204. To find the number of neutrons ([tex]\( n^{0} \)[/tex]), we subtract the number of protons from the mass number:
[tex]\[ \text{Number of neutrons} = A - Z = 204 - 80 = 124 \, n^{0} \][/tex]

### 3. Number of Electrons:
In a neutral atom, the number of electrons equals the number of protons. However, the given ion is [tex]\( \text{Hg}^{2+} \)[/tex], meaning it has lost 2 electrons. Originally, the neutral mercury atom would have 80 electrons, so the Hg [tex]\(2+\)[/tex] ion has:
[tex]\[ \text{Number of electrons} = 80 - 2 = 78 \, e^{-} \][/tex]

### Conclusion:
Hence, the number of protons, neutrons, and electrons in the given ion [tex]\( \,_{80}^{204}\text{Hg}^{2+} \)[/tex] are:
- Protons: [tex]\( 80 \)[/tex]
- Neutrons: [tex]\( 124 \)[/tex]
- Electrons: [tex]\( 78 \)[/tex]

Thus, the correct choice is:
[tex]\[ 80 \, p^{+}, 124 \, n^{0}, 78 \, e \][/tex]
We hope our answers were useful. Return anytime for more information and answers to any other questions you have. Thanks for using our service. We're always here to provide accurate and up-to-date answers to all your queries. Get the answers you need at Westonci.ca. Stay informed with our latest expert advice.