Long Answer TypeDiscuss the orbital shapes of the following covalent molecules:
(i) HF (ii) H2O (iii) NH3.
Short Answer TypeLong Answer TypeUsing the orbital overlap concept, explain the formation of:
(i) O2 molecule (ii) N2 molecule.
What is coordinate or dative bond? Explain the formation of the bond with some examples.
Short Answer TypeWhat are the conditions for co-ordinate bonding?
A covalent bond is formed by two atoms sharing a pair of electrons. The atoms are held together because the electron pair is attracted by both of the nuclei.
In the formation of a simple covalent bond, each atom supplies one electron to the bond.
The electronegativity of the atoms should not be high with respect to each other.
Long Answer Type
bond and a 
bond.
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