It can be a compound or a single element. An element is a pure substance that cannot be separated into simpler substances by chemical or physical means. There are about 117 elements, butcarbon, hydrogen, nitrogen and oxygen are only a few that make up the largest portion of Earth.
I would say d.
Answer:the suns family is stars think about how many stars are in the sky there are billons and more billions
Explanation:
Your answer is B because elements within the same column have equal numbers of valence electrons which determines the reactivity of an element.
