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Which would react chemically by forming an ionic bond?
A. 2 chlorine atoms with 7 valence electrons each
B. 1 neon atom with 8 valence electrons and 1 lithium atom with 1 valence electron
C. 1 sodium atom with 1 valence electron and 1 chlorine atom with 7 valence electrons
D. 2 hydrogen atoms with 1 valence electron each and 1 oxygen atom with 6 valence electrons

Respuesta :

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C. Na would form a 1+ ion losing its electron to the Cl to make a Cl- ion. Gives the molecule NaCl

Answer:

c. One sodium atom with 1 valence electron and 1 chlorine atom with 7 valence electrons

Explanation:

The electronic configuration of one sodium atom is

Na = 2, 8, 1

The electronic configuration of one chlorine atom is

Cl = 2, 8, 7

Therefore Na atom has 1 electron in its valence shell whereas Cl atom has 7 electron in its valence shell.

So Na atom combines with Cl atom to form NaCl atom by transferring atom from the Na atom to Cl atom forming [tex]Na^{+}[/tex] ion and [tex]Cl^{-}[/tex] ion

Thus Na and Cl react to form ionic bond.

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