Question

Arrange the following elements in increasing order of their electronegativity according to the Pauling scale
C, Na, Be and Br

• A. Be, Na, C, Br
• B. Br, C, Na, Be
• C. Na, Be, C, Br
• D. Na, C, Be, Br

Answer 1

The Correct Option is C

To determine the electronegativity order of the given elements according to the Pauling scale, we need to understand the concept of electronegativity. Electronegativity is the tendency of an atom to attract a shared pair of electrons. The Pauling scale is commonly used to measure electronegativity, where higher values indicate a stronger ability to attract electrons.

1. Identifying the electronegativity values:
   • Carbon (C): 2.55
   • Sodium (Na): 0.93
   • Beryllium (Be): 1.57
   • Bromine (Br): 2.96
2. Arranging the elements in increasing order: We need to arrange these elements in increasing order of their electronegativity values.
   • The element with the lowest electronegativity is Sodium (Na) with 0.93.
   • Next is Beryllium (Be) with 1.57.
   • Followed by Carbon (C) with 2.55.
   • The element with the highest electronegativity is Bromine (Br) with 2.96.
3. Conclusion: The increasing order of electronegativity is Na, Be, C, Br. This matches the correct answer provided, which is
   Na, Be, C, Br
   .

To summarize, by understanding the electronegativity values on the Pauling scale, we have correctly identified the order of the elements based on their ability to attract electrons.