What is the first synthetic element that is listed after calcium.

8 carbon atoms forming single bonds with 18 hydrogen atoms; a triple bond exists between the third and fourth carbon atom from the right

explanation:

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of c is as shown here in the image.

answerleaving cheese out to get moldy;

answer carbon and three oxygen atoms;