Ground state electronic configuration of nitrogen atom can be represented by

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Answer

To determine the ground state electronic configuration of a nitrogen atom, we will follow these steps:

### Step 1: Determine the Atomic Number
The atomic number of nitrogen (N) is 7. This means a nitrogen atom has 7 electrons.

### Step 2: Apply the Aufbau Principle
According to the Aufbau principle, electrons fill atomic orbitals starting from the lowest energy level to the highest. The order of filling is:
1. 1s
2. 2s
3. 2p
4. 3s
5. 3p, etc.

### Step 3: Fill the Orbitals
- **1s Orbital**: Can hold a maximum of 2 electrons. For nitrogen, we fill this orbital first.
- Electrons in 1s: 2
- **2s Orbital**: Can also hold a maximum of 2 electrons. We fill this next.
- Electrons in 2s: 2
- **2p Orbital**: Can hold a maximum of 6 electrons, but nitrogen has 3 electrons to place here.
- Electrons in 2p: 3

### Step 4: Write the Electronic Configuration
Now, we can write the electronic configuration based on the filled orbitals:
- 1s² 2s² 2p³

### Step 5: Verify the Configuration
- Total electrons: 2 (from 1s) + 2 (from 2s) + 3 (from 2p) = 7 electrons, which matches the atomic number of nitrogen.

### Final Answer
The ground state electronic configuration of a nitrogen atom is:
**1s² 2s² 2p³**

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