Answer:
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Given what we know, we can confirm that when forming an expanded octet, selenium hexafluo
ride will hold 6 pairs of shared electrons around its center selenium atom.
<h3>What is an expanded octet?</h3>
- An expanded octet is when an atom can hold more than 8 valence electrons in its outer shell.
- This is possible for those elements in period four of the periodic table.
- Elements that are capable of this form what we call hypervalent compounds.
Therefore, given that during an expanded octet formation, the central atom is capable of holding more than 8 valence electrons in its outer shell, the central atom of a selenium hexafluo
ride compound will have 12 electrons being shared, which results in 6 pairs, making C the correct answer.
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Answer:
E) None of the above
Explanation:
Metals react according to the activity series, thta is organized with the leats metals in in the bottom and the most reactive metals in the top. Most reactive metals displace less reactive metals in the compounds they are found.
in this series, Gold, Silver and Mercury are below Copper, this is, they are less reactive than Cu. this means none of them can displace it from its compounds.
Answer:
A) The Al(s)
B) The Ni2+(aq)
C) The Cu2+
D) The Zn(s)
Explanation:
A) The Al(s) is the species that is being oxidized given that it is the one with the highest oxidation potential in the solution.
B) The Ni2+(aq) is the species that is being reduced given that it is the one with the highest reduction potential in the beaker.
C) The oxidizing agent is the substance that is being reduced or you can say the one that has the potential to oxidite other substance. In this case the agent is Cu2+ given that it reduces itself while oxidates the lead.
D) The metal added needs to have a reduction potential lower than the H+ in order to form the gas. The only listed that meets the requirement is the Zn(s).