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CHEMISTRY CH13 Chemical Bonding — Science STD 9 — Question

Tamilnadu BoardEnglish MediumSTD 9ScienceCHEMISTRY CH13 Chemical Bonding2 Marks
Question
Complete the table give below.

Element

Atomic number

 Electron distribution Valence electrons Lewis dot structure
Lithium 3 1s22s1    
Boron 5 1s22s22p1    
Oxygen 8 1s22s22p4    
✓

Answer

Element

Atomic number

Electron distributionValence electronsLewis dot structure
Lithium31s22s11
Boron51s22s22p13
Oxygen81s22s22p46

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