Problem: Predict which molecules are polar. Select all that apply.a) AsF3b) IOF5c) CF4d) CH2Cl2

🤓 Based on our data, we think this question is relevant for Professor Horne's class at TXSTATE.

FREE Expert Solution

a. AsF3

Step 1: Arsenic (EN = 2.18) is less electronegative than fluorine (EN = 3.98) so arsenic is the central atom


Step 2: The total number of valence electrons present in AsF3is:


            Group             Valence Electrons

As       5A                   1 × 5 e5 e

F         7A                   3 × 7 e21 e

Total:  26 valence e


Step 3: The Lewis structure is:


View Complete Written Solution
Problem Details

Predict which molecules are polar. Select all that apply.

a) AsF3

b) IOF5

c) CF4

d) CH2Cl2