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Serga [27]
3 years ago
9

Which of the following is a possible formula unit? (2 points) Select one: a. PbO b. Li2B c. Al2Pb3 d. ClO

Chemistry
1 answer:
storchak [24]3 years ago
7 0

Answer:

a. PbO.

Explanation:

  • The formula unit of a stable chemical compound should maintain that the overall charge of the compound is zero <em>(not charged)</em>.
  • The formula unit of a compound is represented by the lowest ratio numbers of the ions forming the compound.

<em>Choice a:</em> is the right answer PbO

  • That lead is divalent cation Pb²⁺ and O is considered as a divalent anion O²⁻.
  • So, the formula unit contains Pb:O with a ratio of 1:1 (PbO)

<em>Choice b: </em>is a wrong choice Li₂B

  • The lithium cation is a monovalent cation Li¹⁺ and boron is a trivalent cation B³⁺, so we can not do that.

<em>Choice c:</em> is a wrong choice Al₂Pb₃

  • that Al is a trivalent cation Al³⁺ and Pb is a divalent cation Pb²⁺, so we can not do this for the two cations.

<em>Choice d:</em> is a wrong choice ClO

  • that Cl may act as Cl¹⁺ and O acts as O²⁻, so the right formula unit should be Cl₂O.
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