Answer:
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Explanation:
Have no clue but I hope u get the question answered
<span>The effective nuclear charge of an atom = total electrons - inner electrons
For O, ENC = 8 - 2 = 6
For Li, ENC = 3 - 2 = 1
For C, ENC = 6 - 2 = 4
The electrons in O experience the greatest effective nuclear charge and that is why O is smaller than C (which is smaller than Li).</span>
Nitrogen makes up around 78% of the total atmosphere.
Oxidation
iron+oxygen happened