Hydrogen reacts with an element to form a compound. Which element would have the most valence electrons and also be able to react with hydrogen? oxygen chlorine neon nitrogen

Which sentence best describes the formation of igneous rock? a- lava on the surface dries up and makes arock b_melted rocks cools and forms crystals c_rocks under tremendous heat and pressure d_magma is melted rock underground

Afamily is one another name for a group on the table of elements.

Why does his teacher ask him to balance the equation by including the correct coefficient