The number of p-electrons in bromine atoms is

Options

A. 17
B. 7
C. 15
D. 13

Explanation

To determine the number of p-electrons in a bromine atom, we can follow these steps:

### Step 1: Identify the Atomic Number of Bromine
The atomic number of bromine (Br) is 35. This means that a neutral bromine atom has 35 electrons.

### Step 2: Write the Electron Configuration
We need to write the electron configuration for bromine. The electron configuration can be written as:
- 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁵

### Step 3: Identify the p-Orbitals
In the electron configuration, the p-orbitals are represented by:
- 2p, 3p, and 4p.

### Step 4: Count the Electrons in Each p-Orbital
Now, we will count the number of electrons in each of the p-orbitals:
- 2p has 6 electrons (2p⁶)
- 3p has 6 electrons (3p⁶)
- 4p has 5 electrons (4p⁵)

### Step 5: Calculate the Total Number of p-Electrons
Now, we add the electrons from all the p-orbitals:
- Total p-electrons = 6 (from 2p) + 6 (from 3p) + 5 (from 4p) = 17 p-electrons.

### Conclusion
The total number of p-electrons in a bromine atom is 17.

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