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Chemical Bonding - Lonic and Covalent Compounds — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryChemical Bonding - Lonic and Covalent Compounds2 Marks
Question
What is lone pair effect? In what kind of compounds does this effect occur?
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Answer

When the unshared pair of electrons around an atom in the middle of a molecule is completely shared by another atom or an ion, it is called lone pair effect.
Lone pair effect is shown by polar covalent compounds such as HCl and NH3.

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