The pair with minimum difference in electronegativity is:(A) F, Cl(B)

1.	The pair with minimum difference in electronegativity is:(A) F, Cl(B) C, H(C) P, H(D) Na, Cs
Answer» The correct option is (A) F, Cl. Explanation: The pair with minimum electronegativity difference is F,Cl as they are from same group and the period is 2nd for F and 3rd for Cl. We know electronegativity decreases down the group and increases along a period. So if elements respective period are consecutive and same group then there will be least electronegativity difference between two atom which is only possible in F,Cl For C, H and P, H group and period both are different. For Na, Cs group is same but period is not consecutive as Na is from 3rd period and Cs is from 6th period.

The pair with minimum difference in electronegativity is:(A) F, Cl(B) C, H(C) P, H(D) Na, Cs

Answer»

The correct option is (A) F, Cl.

Explanation:

The pair with minimum electronegativity difference is F,Cl as they are from same group and the period is 2nd for F and 3rd for Cl. We know electronegativity decreases down the group and increases along a period. So if elements respective period are consecutive and same group then there will be least electronegativity difference between two atom which is only possible in F,Cl

For C, H and P, H group and period both are different.

For Na, Cs group is same but period is not consecutive as Na is from 3rd period and Cs is from 6th period.

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