Question

TUTUS
1,6, NY,
0, N-), U-8, U-13C: +0
17. Give reasons for the following:
il Molecules of hydrogen and chlorine have single covalent bonds between their atoms while
oxygen has a double covalent and nitrogen a triple covalent bond respectively,
ii] A molecule of methane has four single covalent bonds.
iii) Formation of ammonia involves one atom of nitrogen sharing three electron pairs one with
each of the three atoms of hydrogen.
18. Explain the terms al Lone pair of electrons b] Coordinate bond. Explain diagrammatically the lone pair effect of:
al The nitrogen atom of the ammonia molecule leading to the formation of ammonium ions (NH41
b] The oxygen atom of the H2O molecule leading to formation of hydronium [H201* & hydroxyl ions (OH-
19. Give reasons for the following:
Electrovalent compounds are soluble in water, insoluble in organic solvents, good conductors of electricity
in molten or aq. solution state, have high melting points and undergo electrolytic dissociation on passage
of electric current, while covalent compounds are soluble in organic solvents, insoluble in water,
non-conductors of electricity, have low melting points & undergo ionisation on passage of electric current​

Answer 1

Answer:

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