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BigorU [14]
3 years ago
14

URGENT: Identify the subatomic particles that determine the atomic number of an element.

Chemistry
1 answer:
Sedbober [7]3 years ago
8 0

Answer:

the number of protons determines the atomic number

Explanation:

Ex. Aluminum has 13 protons, so it's atomic number is 13

hope this helps :)

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Answer:

See explanation

Explanation:

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Considering the equation; 2Al(s) + 3Cu(NO3)2(aq) -----> 3Cu(s) + 2Al(NO3)3(aq)

The oxidation state of Al reactant is zero since the oxidation state of all uncombined elements is zero. The oxidation state of All in the product is +3

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The oxidation state of N in the reactant and product is +5.

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This is a redox reaction because from left to right, Al was oxidized (oxidation number increased from zero to +3) while Cu was reduced (oxidation number decreased from +2 to zero).

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