Complete and balance the equation for the single displacement reaction between sodium and zinc chloride. Phases are optional. balanced equation:
Na(s) + ZnCl_{2}(aq) ->
Na(s)+ZnCl2(aq)⟶

2Na + ZnCl₂   →       2NaCl + Zn

Explanation:

Single replacement:

It is the reaction in which one elements replace the other element in compound.

AB + C → AC + B

Chemical equation:

Na + ZnCl₂   →       NaCl + Zn

Balance chemical equation:

2Na + ZnCl₂   →       2NaCl + Zn

Step 1:

Na + ZnCl₂   →       NaCl + Zn

Left hand side                 Right hand side

Na = 1                                 Na = 1

Zn = 1                                  Zn = 1

Cl = 2                                 Cl = 1

Step 2:

Na + ZnCl₂   →       2NaCl + Zn

Left hand side                 Right hand side

Na = 1                                 Na = 2

Zn = 1                                  Zn = 1

Cl = 2                                 Cl =  2

Step 3:

2Na + ZnCl₂   →       2NaCl + Zn

Left hand side                 Right hand side

Na = 2                                 Na = 2

Zn = 1                                  Zn = 1

Cl = 2                                 Cl =  2

answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.  

bcde is the incorrect answer it is a