Carbon's valence of four most directly results from its a. tetrahedral shape. b. four electrons in the valence shell that can form four covalent bonds. c. ability to form single, double, and triple bonds. d. ability to form chains and rings of carbon atoms. 2. Hydrocarbons are not soluble in water because a. they are hydrophilic. b. their C-H bonds are nonpolar. c. they do not ionize. d. they are lighter than water. 3. Which of the following is not true of an asymmet- ric carbon atom

(1). Carbon's valence of four most directly results from its four electrons in the valence shell that can form four covalent bonds.

(2). Hydrocarbons are not soluble in water because their C-H bonds are non-polar.

Explanation:

(1).  Valency is the number of electrons need to be gained or lost by an atom in order to acquire noble gas electronic configuration.

Atomic number of carbon atom is 6 and its electronic distribution is 2, 4. This means that there are 4 valence electrons present in the valence or outermost shell of the carbon atom.

So, in order to attain stability it needs to share its 4 valence electrons with another atom. Hence, the valency of carbon is 4.

Therefore, carbon's valence of four most directly results from its four electrons in the valence shell that can form four covalent bonds.

(2).  Hydrocarbons are the species which contain atoms of carbon and hydrogen only. For example, is a hydrocarbon.

As atoms of these compounds are connected to each other by London dispersion forces which are weak in nature. Hence, these hydrocarbons are not able to break the hydrogen bond between the atoms of water due to which they are unable to dissolve in water.

Therefore, hydrocarbons are considered as hydrophobic (water fearing) in nature.

Thus, hydrocarbons are not soluble in water because their C-H bonds are non-polar.

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the mass of the cathode increases because ions from the solution get reduced to atoms and become part of the cathode.

explanation:

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