Four elements are shown as they appear in the periodic table. which statement makes an accurate comparison of some of these elem
2 answers:
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Explanation:
check the steps in the attached image
2.) Average atomic mass =Σ (abundance x molar mass) /100
= (12.64 x 302.04 + 18.23 x 304.12 + 69.13 x 305.03) /100
=304.486 u(Dalton) . This is avg atomic mass.
