Which of the following pair of atoms is most likely to form covalent bond?

A. C, O

B. Mg, Br

C. Na, Cl

D. Ba, Cl


N and N  

N and H  

O and Na  

H and H





A. Na and F

Explanation :

example of an ionic bond is the formation of sodium fluoride, NaF, from a sodium atom and a fluorine atom. In this reaction, the sodium atom loses its single valence electron to the fluorine atom, which has just enough space to accept it.



Carbon and hydrogen are a likely pair to be bonded covalently.


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