The number of electrons in the M-shell of the element with atomic number 22 is :-

Options

A. 8
B. 10
C. 15
D. 12

Explanation

To find the number of electrons in the M-shell of the element with atomic number 22 (Titanium), we can follow these steps:

### Step 1: Identify the Element
The element with atomic number 22 is Titanium (Ti).

### Step 2: Write the Electronic Configuration
The electronic configuration of Titanium is:
- 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d²

### Step 3: Identify the Shells
In the electronic configuration:
- The K-shell (1st shell) contains: 1s²
- The L-shell (2nd shell) contains: 2s² 2p⁶
- The M-shell (3rd shell) contains: 3s² 3p⁶ 3d²
- The N-shell (4th shell) contains: 4s²

### Step 4: Count the Electrons in the M-shell
Now, we need to count the electrons in the M-shell:
- From 3s²: 2 electrons
- From 3p⁶: 6 electrons
- From 3d²: 2 electrons

Adding these together:
- Total electrons in M-shell = 2 (from 3s) + 6 (from 3p) + 2 (from 3d) = 10 electrons

### Final Answer
The number of electrons in the M-shell of the element with atomic number 22 is **10**.

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