<span>Divide the number of grams present in the sample by copper's gram atomic weight to find the number of gram atomic weights present. Then multiply that result by Avogadro's Number: 6.022137 x 10^23 atoms/gram atomic weight.1,200 g/(63.54 g/gram atomic weight) ? 18.885741 gram-atomic weights. Hope this helps. </span>
<span>the sharing of electron pairs between atoms</span>
Explanation:
if you post the whole question I can help you
A cation (+) will be smaller than its neutral atom, while anion (-) will be larger than its neutral atom.