Potassium Sulfate = K₂SO4
SO4 = negative 2, so you need 2 K+ ions to counteract it, hence K₂
Molecules comes first since they are the smallest. Then atoms. Then blood cells. Then the heart I think, and then the person.
You should know this I am learning it this year and I am in 8th grade) Hydrogen<span>,</span><span>Carbon ,<span>Nitrogen and </span><span>Oxygen
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The group of elements that will have the lowest electronegativities would be the elements in group 1 of the periodic table. These are metals, and would have low electronegativity as they would not need to attract or pull electrons but to give up one, to have a stable octet. Also, if you note the trend in electronegativity, it increases as you move from left to right on the table, here we are at the leftmost portion of the Table.