Answer the following using your knowledge and conceptual ability:(Give reasons to support each ans. even fill in the blanks)
1) Complete the following:
a)When the nuclei of two different reacting atoms are of................mass(equal,unequal) then the bond so formed is called...........(polar,non-polar)covalent bond.
b)In the case of the non-polar covalent bond, the covalent bond is formed in the .........(corner,middle) of atoms and electrons are ........(equally,unequally) distributed.
2)Give two examples in each case:
a)coordinate bond compounds
b)Solid covalent compounds
c)gaseous polar compounds
d)gaseous non-polar compounds
e)liquid non-polar compounds 

Asked by rickykumar00001 | 13th Jun, 2015, 03:34: PM

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Answer to your first query is given below:
(a) unequal, polar
A polar covalent bond is formed between two atoms of different elements having different electronegativities, the atom with a higher value of electronegativity tries to pull the shared pair of electrons to a greater extent towards itself as compared to the atom with lower value of electronegativity.
(b)middle, equally
A non-polar covalent bond is formed between two similar atoms i.e. atoms having the same values of electronegativity, the pull of the two atoms on the shared pair is equal and the shared pair lies exactly in the middle of the nuclei of the two atoms.

Answered by Vaibhav Chavan | 14th Jun, 2015, 01:15: PM