2 electrons. it has electron configuration of 2.8.8.2 hence the last 2 will be lost for it to gain stable.
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the oxidation states of the elements before and after the reaction is;
Pb oxidation state changes from 0 to +2
SO₄²⁻ ion there's no change in the oxidation state during the reaction
Au oxidation state changes from +3 to 0
reduction reactions are when there's a decrease in the oxidation state of the species
oxidation reactions are when theres an increase in the oxidation state of the species
the element where there's a decrease in oxidation state is Au.
Therefore Au gets reduced.
answer is B) Au
Answer:
5 protons, 5 electrons, and 6 neutrons
In the periodic table, there are seven horizontal rows of elements called periods.
