B. Explain the trend in Question 2a. (Comparing the element at the top of the group with the element at the bottom of the group, what happens to the value of n for the valence electron? What does n inform
us of? What kind of force exists between an electron in the valence shell and the electrons in the core
shells?

Exothermic,  physical change after it is already baked

What do you mean by that? like the contents? the thc level?

The answer to the question: choose the correct statement.  a) when ethane reacts with fluorine gas the product is less stable.b) addition reactions of unsaturated hydrocarbons and halogens requires a high activation energy.  c)the double covalent bond within unsaturated hydrocarbons requires a lot of energy to break.  d)the double covalent bond within unsaturated hydrocarbons can be broken easily.is: a) when ethane reacts with fluorine gas the product is less stable.