Which of the following describes the element .(Select all that apply.)reacts with alkali metals to form saltsforms an ion with a charge of 2is one of the group of the least reactive elements forms a cation that is isoelectronic with a noble gasis very reactive as a metal consists of diatomic molecules in elemental form

answer: lol

explanation:

lol

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.