Explain why the symbol for the element sulfur and the formula for a molecule of sulfur differ.

Elements are composed by one single atom and molecules are composed by two or more atoms of the same element.

Explanation:

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At first, we must consider that elements are composed by one single atom and molecules are composed by two or more atoms of the same element. In such a way if we bring to bear sulfur whose symbol is we're just identifying there is only one atom. On the contrary, a typical sulfur molecule, contains eight equal sulfur atoms.

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shield volcanos are angry and get mad over the smallest things so much that there heads erupt   pahoehoe and a'a lava. a composite volcano is the poller opposite of a shield volcano. its   peaceful thing and knows how to control its emotions.      

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.