What are the first and second most abundant element in the universe?

Describe the chemical reaction based on the chemical equation below. also, explain whether the equation is balanced.

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

An atom of lithium (li) and an atom of chlorine (cl) engage in a chemical reaction. which correctly describes the structure of the resulting chemical compound? hint: consider the class of each element. the chemical compound will have a network structure. the chemical compound will have triple bonds. the chemical compound will have a ball-and-stick structure. the chemical compound will have double bonds.