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Identify two types of chemical bonding in the source of dietary potassium

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

How have the greenhouse gasses increased from the year 2000 to 2018