b. a lipid.
c. a molecule.
d. an element.
Answer:
gravity
Explanation:
your mass is the same on the moon as is on earth or underwater but your weight changes because of gravity
in the atom.
B. Electronegativity increases because there are more valence
electrons in the atom.
C. Electronegativity decreases because the valence electrons are
farther from the nucleus.
D. Electronegativity decreases because the size of the nucleus is
bigger.
Electronegativity decreases because the valence electrons are farther from the nucleus. Hence, option C is correct.
Electronegativity is a chemical property that describes the tendency of an atom or a functional group to attract electrons toward itself.
From top to bottom down a group, electronegativity decreases. This is because atomic number increases down a group, and thus there is an increased distance between the valence electrons and nucleus, or a greater atomic radius.
Important exceptions to the above rules include the noble gases, lanthanides, and actinides.
Electronegativity decreases because the valence electrons are farther from the nucleus. Hence, option C is correct.
Learn more about Electronegativity here:
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Answer:
freezing
Explanation:
(2) structural formula (4) IUPAC name
Answer: Option (1) is the correct answer.
Explanation:
When two different molecules represent same molecular formula but different arrangement of atoms then they are known as isomers.
Whereas physical properties are the properties which determines the state of object or substance. That is, property which can be observed.
For example, wood is brown in color.
On the other hand, when arrangement of atoms are represented by the formula of a molecule then it is known as structural formula.
Thus, we can conclude that all isomers of octane have the same molecular formula.