Which of the following characteristics pertain to covalent compounds? a. These c

Question

Which of the following characteristics pertain to covalent compounds? a. These compounds are generally soluble in polar solvents b. These compounds are poor conductors of electricity c. These compounds generally have high melting points d. These compounds are formed between elements with large differences in electro negativity e. These compounds are generally soluble in nonpolar solvents Place the following in order of increasing bond length: S-F Se-F O-F Which of the following bonds is the strongest? a. N=0 b. N-I c. N-O d. N-S e. N=N Taking into account formal charges, draw the best structure for SO_4^2+. What are the bond angles in NO_2^-?

Explanation / Answer

28)
covalent molecules can be polar and hence they can be soluble in polar or non polar solvent.
a and e are thus wrong

large difference in electronegatvity give rise to ionic compound
d is wrong

b and c can both be correct

29)
size of Se > size of S > size of O
so,
bond length order will be
O-F < S-F < Se-F

I am allowed to answer only 1 question at a time

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