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storchak [24]
2 years ago
7

Why do you think lone pairs of electrons create greater repulsion when located near other

Chemistry
1 answer:
Sedaia [141]2 years ago
5 0

When there are lone pairs on the valence shell of the central atom in a molecule, the bond angle is decreased.

The shape of molecules depend on the number of electron pairs on the valence shell of the molecules. These electron pairs could be lone pairs or bond pairs. Lone pairs occupy more space around the central atom since it is attracted to only one nucleus compared to bond pairs which are attracted to two nuclei.

When lone pairs are present on the central atom in a molecule, they tend to "squeeze" the molecule thereby decreasing the bond angle in the molecule. Hence, presence of one or more lone pairs of electrons make the bond angles get smaller.

Learn more: brainly.com/question/10079361

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Which one of the following substances would be the most soluble in CCl4?
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Answer: Option (d) is the correct answer.

Explanation:

Carbon tetrachloride (CCl_{4}) is a non-polar solvent. Whereas out of the given options, Na_{2}SO_{4}, H_{2}O, CH_{3}CH_{2}CH_{2}CH_{2}OH, and HI are all polar molecules.

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Also it is known that like dissolves like.

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<h3>Further explanation  </h3>

Heat can be calculated using the formula:  

Q = mc∆T  

Q = heat, J  

m = mass, g  

c = specific heat, joules / g ° C  

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Heat required :

\tt Q=m.c.\Delta T\\\\Q=10\times 4.186\times 10\\\\Q=418.6~J

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