Correct order of electronegativity of group 15

Options

A. N>P>As>Sb
B. Sb>As>P>N
C. N>As>P>Sb
D. N>As>Sb>P

Answer

To determine the correct order of electronegativity of the elements in Group 15 (also known as the nitrogen group), we will follow these steps:

### Step 1: Identify the Elements in Group 15
The elements in Group 15 of the periodic table are:
- Nitrogen (N)
- Phosphorus (P)
- Arsenic (As)
- Antimony (Sb)

### Step 2: Understand Electronegativity
Electronegativity is the ability of an atom to attract electrons in a chemical bond. Generally, electronegativity increases from left to right across a period and decreases down a group in the periodic table.

### Step 3: Analyze the Trend in Group 15
- As we move down the group from Nitrogen to Antimony, the electronegativity decreases due to the increasing atomic size and the shielding effect of inner electrons.
- Therefore, we expect Nitrogen to have the highest electronegativity and Antimony to have the lowest.

### Step 4: Assign Electronegativity Values
The commonly accepted electronegativity values for the elements in Group 15 are:
- Nitrogen (N): 3.0
- Phosphorus (P): 2.5
- Arsenic (As): 2.8
- Antimony (Sb): 2.05

### Step 5: Arrange the Elements in Order of Electronegativity
Based on the values:
1. Nitrogen (3.0)
2. Arsenic (2.8)
3. Phosphorus (2.5)
4. Antimony (2.05)

Thus, the correct order of electronegativity from highest to lowest is:
**Nitrogen > Arsenic > Phosphorus > Antimony**

### Step 6: Finalize the Answer
The correct order of electronegativity for Group 15 is:
**N > As > P > Sb**

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