How did the periodic table get its shape? A. The shape tells us how many atoms exist of each element

B. The middle is empty just in case we discover new elements

C. The shape was random and has no purpose

D. The elements are sorted and grouped by their properties

D.The elements are sorted and grouped by their properties

Explanation:

answer; if congress didn't act on certain requests;

abraham lincoln issued the preliminary emancipation proclamation on september 22nd, 1862. it stipulated that if the southern states did not cease their rebellion by january 1st, 1863, then proclamation would go into effect.