Compounds have similar properties to the elements of which they are made.For example, FeS is magnetic and smelly, since iron (Fe) and sulfur (S) are attracted to a magnet, and possess an odor of eggs,
respectively

True
False​

Final answer:

All of the dots in a Lewis symbol represent the valence electrons of an atom. Valence electrons are responsible for the atom's chemical properties and can be determined by the group number of the element on the periodic table.

Explanation:

All of the dots in a Lewis symbol represent the valence electrons of an atom. Valence electrons are the electrons in the outermost energy level of an atom and are responsible for the atom's chemical properties. The number of valence electrons can be determined by looking at the group number (also known as the column number) of the element on the periodic table.

For example, oxygen (O) is in group 16, so it has six valence electrons. Its Lewis symbol would have six dots surrounding the elemental symbol.

Similarly, chlorine (Cl) is in group 17, so it has seven valence electrons. Its Lewis symbol would have seven dots surrounding the elemental symbol.

Learn more about Valence electrons here:

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Among the choices given, the best answer is the third option. Melting ice shows an increase in entropy. Entropy is the degree of disorderliness in a system. Among the phases, solid has the most ordered structure which means it has the least entropy. The ice melting shows a phase change from solid to liquid. Liquid molecules are more disorganized than the solid thus there is an increase in entropy.

Answer: melting ice

Explanation:

Entropy is the measure of randomness or disorder of a system. If a system moves from  an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.

1. condensation of water : Condensation process is a process where gaseous state changes to liquid state., thus decreasing randomness and decreasing entropy.

2. Freezing water : Freezing process is a process where liquid state changes to solid state, thus decreasing randomness and decreasing entropy.

3. melting ice: Fusion process is a process where solid state changes to liquid state, thus increasing randomness and increasing entropy.

4. deposition of : deposition process where gaseous state changes to solid state by escaping liquid state, thus decreasing randomness and decreasing entropy.