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प्रश्न
Write Lewis symbols for the following atoms and ions: Al and Al3+.
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उत्तर १
Al and Al3+
The number of valence electrons in aluminium is 3.
The Lewis dot symbol of aluminium (Al) is 
.
The tripositive charge on a species infers that it has donated its three electrons. Hence, the Lewis dot symbol is 
उत्तर २
`""_13"Al"` = 2,8,3 ∴ Lewis symbol = 
, `"Al"^(3+) "ions" = ["Al"]^(3+)`.
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संबंधित प्रश्न
Explain the Formation of a Chemical Bond.
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Explain in brief with one example of coordinate bond
Answer in one sentence:
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____________ is an example of molecule with expanded octet.
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What is the formal charge on hydrogen atom in water molecule?
Match the items given in Column I with examples given in Column II.
| Column I | Column II |
| (i) Hydrogen bond | (a) \[\ce{C}\] |
| (ii) Resonance | (b) \[\ce{LiF}\] |
| (iii) Ionic solid | (c) \[\ce{H2}\] |
| (iv) Covalent solid | (d) \[\ce{HF}\] |
| (e) \[\ce{O3}\] |
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