Electronegativity difference between a group 15 element and $\text{P}$ is less than electronegativity difference between another group 15 element and $\text{P}$. Those group 15 elements respectively are :

Question

The correct order of C, N, O and F in terms of second ionisation potential is

Answer 1

The question is testing the understanding of the concept of electronegativity in group 15 elements and their values relative to phosphorus ($\text{P}$). Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. In the periodic table, it generally increases across a period and decreases down a group.

The correct answer for this question is $\text{Bi}, \text{N}$. Here's a step-by-step reasoning:

Group 15 Elements: This group includes the following elements in order of increasing atomic number: Nitrogen ($\text{N}$), Phosphorus ($\text{P}$), Arsenic ($\text{As}$), Antimony ($\text{Sb}$), and Bismuth ($\text{Bi}$).
Electronegativity Trend:
- Electronegativity decreases down the group. Thus, $\text{N}$ being at the top has the highest electronegativity, and $\text{Bi}$ at the bottom has the lowest among these elements.
- $\text{P}$ is more electronegative than $\text{Bi}$ but less than $\text{N}$.
Electronegativity Values:
- $\text{N}$ has an electronegativity of about 3.0.
- $\text{P}$ has an electronegativity of about 2.1.
- $\text{As}$ has an electronegativity of about 2.0.
- $\text{Sb}$ has an electronegativity of about 1.9.
- $\text{Bi}$ has an electronegativity of about 1.9.
Comparison:
- The electronegativity difference between $\text{Bi}$ and $\text{P}$ is approximately $|1.9 - 2.1| = 0.2$.
- The electronegativity difference between $\text{N}$ and $\text{P}$ is approximately $|3.0 - 2.1| = 0.9$.
Conclusion: The electronegativity difference between $\text{Bi}$ and $\text{P}$ is smaller than the difference between $\text{N}$ and $\text{P}$. Therefore, the group 15 elements matching the question description are indeed $\text{Bi}$ and $\text{N}$.

Thus, the correct answer is: $\text{Bi}, \text{N}$.

Answer 2

The question is testing the understanding of the concept of electronegativity in group 15 elements and their values relative to phosphorus ($\text{P}$). Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. In the periodic table, it generally increases across a period and decreases down a group.

The correct answer for this question is $\text{Bi}, \text{N}$. Here's a step-by-step reasoning:

Group 15 Elements: This group includes the following elements in order of increasing atomic number: Nitrogen ($\text{N}$), Phosphorus ($\text{P}$), Arsenic ($\text{As}$), Antimony ($\text{Sb}$), and Bismuth ($\text{Bi}$).
Electronegativity Trend:
- Electronegativity decreases down the group. Thus, $\text{N}$ being at the top has the highest electronegativity, and $\text{Bi}$ at the bottom has the lowest among these elements.
- $\text{P}$ is more electronegative than $\text{Bi}$ but less than $\text{N}$.
Electronegativity Values:
- $\text{N}$ has an electronegativity of about 3.0.
- $\text{P}$ has an electronegativity of about 2.1.
- $\text{As}$ has an electronegativity of about 2.0.
- $\text{Sb}$ has an electronegativity of about 1.9.
- $\text{Bi}$ has an electronegativity of about 1.9.
Comparison:
- The electronegativity difference between $\text{Bi}$ and $\text{P}$ is approximately $|1.9 - 2.1| = 0.2$.
- The electronegativity difference between $\text{N}$ and $\text{P}$ is approximately $|3.0 - 2.1| = 0.9$.
Conclusion: The electronegativity difference between $\text{Bi}$ and $\text{P}$ is smaller than the difference between $\text{N}$ and $\text{P}$. Therefore, the group 15 elements matching the question description are indeed $\text{Bi}$ and $\text{N}$.

Thus, the correct answer is: $\text{Bi}, \text{N}$.

Electronegativity difference between a group 15 element and $\text{P}$ is less than electronegativity difference between another group 15 element and $\text{P}$. Those group 15 elements respectively are :

Show Hint

The Correct Option is A

Solution and Explanation

Top Questions on Periodic properties

Questions Asked in JEE Main exam