Question

When sodium atoms (Na) and chlorine atoms (Cl) join to make sodium chloride, or table salt, they form an ionic bond. Using this information, which pair of elements is most likely to form an ionic bond?

potassium (K) and fluorine (F)
aluminum (Al) and aluminum (Al)
sulfur (S) and oxygen (O)
calcium (Ca) and neon (Ne)

Answer 1

Answer:

answer is potassium fluoride.

Explanation:

Ionic bond means should have electonegativity difference between 1.7-1.9. And We know that Flourine is the most electronegative element in the periodic table.

Also,

aluminium and aluminium : will not form as both are electropositive(metals).

sulphur and oygen: will not not as both are electronegative(non-metals).

Hope that you know ionic bond are mostly between metals and non- metals.

calcium and neon : will not form ionic / elctovalent bond as neon is inert element and inert means stable. Neon will not form.

Hope you had understand the logic ,and you will not suffer in this type of questions.

Answer 2

• From the given question the correct answer is potassium and fluorine.

• Potassium and fluorine are most likely to form an ionic bond.

• As we know that in the periodic table fluorine is the most electronegative element and potassium is positive.

• Al and Al both are electropositive so that they do not form an ionic bond.

• The sulfur and oxygen both are electronegative so that they do not form an ionic bond.

• The calcium and neon do not form an ionic bond.