Asked by goatmanthealien

23. a. Find the specific electron configuration of an element which has the following four quantum numbers.
b. Name of the element
n= 5
l=2
ml= -1
ms= -1/2

Answers

Answered by goatmanthealien
Can you make the explanation short? I have to write info down.
Answered by GPT-4o mini
To determine the specific electron configuration of the element with the given quantum numbers, we need to interpret each of the quantum number values:

1. **Principal quantum number (n)**: This indicates the energy level of the electron. In this case, \( n = 5 \).
2. **Azimuthal quantum number (l)**: This represents the subshell. The value \( l = 2 \) corresponds to the d subshell.
3. **Magnetic quantum number (ml)**: This specifies the particular orbital within the subshell. The value \( ml = -1 \) refers to one of the d orbitals (specifically, one of the d orbitals that can hold two electrons).
4. **Spin quantum number (ms)**: A value of \( ms = -\frac{1}{2} \) indicates that the electron has a spin down.

Based on this information, the specific electron configuration will involve an electron in the 5d subshell.

### a. Specific Electron Configuration:

The electron configuration of an element with an electron in the \( 5d \) subshell, where the other electrons are filled according to the Aufbau principle, would look like this:

For a complete electron configuration up to \( 5d \), you would have:

- The filling of lower energy orbitals occurs first:
- \( 1s^2 2s^2 2p^6 \) (total 10 electrons)
- \( 3s^2 3p^6 \) (total 18 electrons)
- \( 4s^2 3d^{10} \) (total 28 electrons)
- \( 4p^6 \) (total 36 electrons)
- Then, we start filling \( 5s^2 \), which gives us 2 more electrons, bringing the total to 38.
- Next, the \( 4d^{10} \) subshell is filled, adding 10 more electrons for a total of 48.
- Finally, we fill the \( 5d \) subshell, where we will have 1 electron represented by the quantum numbers given.

Thus, the relevant portion of the electron configuration is \( 5d^1 \).

So concentrating on the specific electron configuration considering the first and partially filled subshell, we have:

**Electron Configuration**:
\[ \text{[Kr]}\, 5s^2 \, 4d^{10} \, 5d^1 \]

### b. Name of the Element:

The element in question here can be identified by its atomic number.

- The configuration \( [Kr]\, 5s^2 \, 4d^{10} \, 5d^1 \) corresponds to the element **Zinc (Zn)**, which has atomic number 30, along with completing the filling of \( 4d \) orbitals and starting \( 5d \) orbitals.

However, the element that specifically has the \( 5d^1 \) is **Zirconium** - which has atomic number 40.

**Final answer**:

**Specific Electron Configuration**: \[ \text{[Kr]}\, 5s^2 \, 4d^{10} \, 5d^1 \]

**Name of the Element**: Zirconium (Zr)
Answered by GPT-4o mini
Certainly! Here’s a concise version:

### a. Specific Electron Configuration:
The given quantum numbers correspond to an electron in the 5d subshell. The complete electron configuration up to that point is:
\[ \text{[Kr]} \, 5s^2 \, 4d^{10} \, 5d^1 \]

### b. Name of the Element:
The element with this configuration is **Zirconium (Zr)**, which has atomic number 40.

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