Predict the ion formed by each of the following: Mg, O, He, Rb, Br and explain why?​

How does the atmosphere to make earth livable? check all that apply. causes the seasons contains oxygen provides warmth creates important nutrients blocks harmful energy from the sun plz like !

The sum of the oxidation numbers in a neutral compound is always

The half-life of a certain element is 100 days. how many half-lives will it be before only one eighth of this elementremains?