The average atomic mass of the element = 35.5
calculation
average atomic mass = sum of the masses of its isotope each multiplied by its natural abundance.
that is
[(75 x35) +(25 x37)] /100 = 35.5
Oxygen has 6 valence electrons, so B
Na+ and Cl- are the answers
Answer:
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Step 1: Design or re-organise to eliminate hazards. ...
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Step 6: Use Personal Protective Equipment (PPE)
Explanation:
i it true?