Avalid lewis structure of cannot be drawn without violating the octet rule. select one: a. sef4 b. nf3 c. sif4 d. cf4

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.