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Which combination of elements would most likely form an ionic compound?  
A hydrogen and oxygen  
B carbon and chlorine  
C sodium and fluorine  
D silicon and sulfur

Sagot :

Sodium and Fluorine will form ionic bonds to form NaF compounds

Further explanation

Atoms have different stability. Unstable atomic atoms will try to form stable electron configurations like those of noble gases. Where noble gases have the number of outer electrons 2 or 8

The formation of electron configurations such as noble gases can be done by sharing electrons with covalent bonds or hand over electrons with ionic bonds

Generally, ionic bonds occur in metals and nonmetallic elements. Metal elements have low ionization energy and non-metallic elements have a high electron affinity

While covalent bonds occur because of the use of shared electrons. In general, this bond occurs between nonmetallic elements, which has the same electron attraction

C sodium and fluorine

Sodium is in group 1A and period 3, including metals with atomic number 11, releasing 1 electron to be stable like Ne atoms (atomic number 10) to form Na⁺ ions (cation)

Fluorine is in group 7A and period 2, including non-metals with atomic number 9, requires 1 electron to be stable like Ne atoms (atomic number 10) to form F⁻ ions  (anion)

So the two will bond together to form ions in the NaF compound

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