When an atom of sodium and an atom of fluorine combine to form the salt, sodium fluoride, an
ionic bond, is formed. Which statement correctly
describes the behavior of the valence electron in
the ionic bond?
A. An electron from the fluorine atom moves to
the sodium atom forming two ions.
B.
An electron from the sodium atom moves to
the fluorine atom forming two ions.
C. An electron from the fluorine atom is shared
with the sodium atom forming a sodium ion.
D. An electron from the sodium atom is shared
with the fluorine atom forming a fluoride ion.

A branch of science which deals with the study of chemicals is called chemistry.

The correct answer to the question is B.

The reaction between the acid and base is called a neutralization reaction and forms the salt.

Salt is an ionic compound in which cation and anion joined together to form a compound. In an ionic compound, one element gives electrons to the other element to complete the outer shell and make a bond. In the question, sodium has more electrons and gives them to fluorine.

Hence, the correct option is B that is An electron from the sodium atom moves to  the fluorine atom forming two ions.

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B.  An electron from the sodium atom moves to  the fluorine atom forming two ions.

Explanation:

In forming this ionic compound NaF, an electron is transferred from the sodium atom to the fluorine atom and two ions are formed.

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answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.