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प्रश्न
Write Lewis symbols for the following atoms and ions H and H–.
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उत्तर १
H and H–
The number of valence electrons in hydrogen is 1.
The Lewis dot symbol of hydrogen (H) is 
The uninegative charge infers that there will be one electron more in addition to the one valence electron. Hence, the Lewis dot symbol is 
उत्तर २
`""_1"H" = 1` ∴ Lewis symbol = 
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| 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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\[\ce{^\bullet_\bullet {\ce{O}} ≡ C - \overset{\bullet\bullet}{\underset{\bullet\bullet}{O^\bullet_\bullet}}}\]
