Question

Two elements are more likely to be ionically bonded when ....

Select one:
a. the elements in the material have similar electronegativities
b. the elements in the material are well apart (in different sides) in the periodic table
c. the elements in the material belong to the same group
d. the elements in the material has the same valence

Answer 1

Ans

Option B is the correct answer

Ionic bond forms when the difference in electronegativity of the two elements is large, then the transfer of valence electrons from the lower electronegative element to higher electronegative element take place. The elements are well apart (in different sides) in the periodic table.

Option A is incorrect because similar electronegativity forms covalent bonds

Option C is incorrect because elements in the same group have similar electronegativity.

Option D is incorrect because to form the ionic bond one element has the excess number of valence electrons and the other has same less valence electrons to complete its valency instead of same valence electrons on the both elements.

For ex- NaCl has the ionic bond

Valence electrons in Na = 1 (1 excess electron)

Valence electrons in Cl = 7 (1 less electron)