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An oxide of an element Z has a formula Z...

An oxide of an element Z has a formula `Z_(2)O_(3)`.
How many electrons are there in the outermost shell of an atom of element Z?

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To determine how many electrons are in the outermost shell of an atom of element Z in the compound Z₂O₃, we can follow these steps: ### Step 1: Understand the Compound The formula Z₂O₃ indicates that there are 2 atoms of element Z for every 3 atoms of oxygen in the compound. ### Step 2: Determine the Valency of Oxygen Oxygen typically has a valency of -2 because it needs to gain 2 electrons to complete its outermost shell (octet). The electronic configuration of oxygen is 1s² 2s² 2p⁴, which means it has 6 electrons in its valence shell and needs 2 more to reach 8. ...
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