Question

Use the periodic table to answer the question.



Which of the following elements are most likely to form an ionic bond?

(1 point)
Responses

C and O
C and O

K and Ca
K and Ca

Na and Cl
Na and Cl

Se and Cl

Answer 1

Ionic bonds typically form between metals and nonmetals, where electrons are transferred from the metal to the nonmetal.

Among the given options:

- **C and O:** Both carbon (C) and oxygen (O) are nonmetals and are more likely to form covalent bonds rather than ionic bonds.
- **K and Ca:** Both potassium (K) and calcium (Ca) are metals, and they are not likely to form ionic bonds with each other.
- **Na and Cl:** Sodium (Na) is a metal and chlorine (Cl) is a nonmetal, making them likely to form an ionic bond (NaCl).
- **Se and Cl:** Both selenium (Se) and chlorine (Cl) are nonmetals and are more likely to form covalent bonds.

Therefore, the pair that is most likely to form an ionic bond is:

**Na and Cl**.