(b) Reduction is a loss of electrons OR a decrease in oxidation state
(c) Redox reactions involve a transfer of electrons from the element being to the element being .
2. Complete the rules for assigning oxidation numbers by filling in the missing words.
(1) The oxidation number of an element is .
(2) The oxidation number of a monatomic ion is equal to the of the ion.
(3) In a polyatomic ion, the oxidation numbers of all the atoms in the ion add up to the
of the ion.
(4) In a compound, the sum of all the oxidation numbers of the atoms is
(5) The oxidation number of oxygen in its ions and compounds is always
except in where it is -1.
(6) The oxidation number of hydrogen in its ions and compounds is always
(7) The oxidation number of elements in compounds is often the same as their if they were an ion
Answers: 1
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(b) Reduction is a loss of electrons OR a decrease in oxidation state
(c) Redox reactions involve a...
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