The element with atomic number 35 is the element of

Options

A. s-block
B. p-block
C. d-black
D. f-block

Explanation

To determine the block of the element with atomic number 35, we can follow these steps:

### Step 1: Identify the Element
The element with atomic number 35 is Bromine (Br).

### Step 2: Determine the Electronic Configuration
To find the electronic configuration of Bromine, we fill the orbitals in order of increasing energy levels:
- 1s²
- 2s²
- 2p⁶
- 3s²
- 3p⁶
- 4s²
- 3d¹⁰
- 4p⁵

Thus, the complete electronic configuration of Bromine is:
\[ \text{1s}^2 \text{2s}^2 \text{2p}^6 \text{3s}^2 \text{3p}^6 \text{4s}^2 \text{3d}^{10} \text{4p}^5 \]

### Step 3: Identify the Outermost Shell
The outermost shell for Bromine is the 4th shell, which contains:
- 4s² (2 electrons)
- 4p⁵ (5 electrons)

So, the total number of electrons in the outermost shell is:
\[ 2 + 5 = 7 \]

### Step 4: Determine the Block
Since the last electron added is in the p orbital (4p), Bromine belongs to the p-block of the periodic table.

### Step 5: Identify the Group
The number of valence electrons (7) corresponds to the group number in the periodic table. Therefore, Bromine is in Group 17.

### Conclusion
Based on the electronic configuration and the position in the periodic table, the element with atomic number 35 (Bromine) is a **p-block element**.

### Final Answer
The element with atomic number 35 is an element of the **p-block**.

---