Question
Use the list to answer the question.
• potassium, Group lA
• calcium, Group lIA
• iodine, Group VIIA
• neon, Group VIllA
Which two elements in the list would bond together based on their ionic charges?
(1 point)
• calcium and potassium
• potassium and neon
• calcium and neon
• potassium and iodine
• potassium, Group lA
• calcium, Group lIA
• iodine, Group VIIA
• neon, Group VIllA
Which two elements in the list would bond together based on their ionic charges?
(1 point)
• calcium and potassium
• potassium and neon
• calcium and neon
• potassium and iodine
Answers
GPT-4o mini
To determine which two elements would bond together based on their ionic charges, we can look at the groups they belong to:
- **Potassium (K)** is in Group IA, and it has a charge of +1 when it forms an ion (K⁺).
- **Calcium (Ca)** is in Group IIA, and it has a charge of +2 when it forms an ion (Ca²⁺).
- **Iodine (I)** is in Group VIIA, and it has a charge of -1 when it forms an ion (I⁻).
- **Neon (Ne)** is in Group VIIIA and is a noble gas, it does not typically form ions.
The only pair that would bond due to opposite charges are potassium (K⁺) and iodine (I⁻).
Therefore, the correct answer is:
- **potassium and iodine**.
- **Potassium (K)** is in Group IA, and it has a charge of +1 when it forms an ion (K⁺).
- **Calcium (Ca)** is in Group IIA, and it has a charge of +2 when it forms an ion (Ca²⁺).
- **Iodine (I)** is in Group VIIA, and it has a charge of -1 when it forms an ion (I⁻).
- **Neon (Ne)** is in Group VIIIA and is a noble gas, it does not typically form ions.
The only pair that would bond due to opposite charges are potassium (K⁺) and iodine (I⁻).
Therefore, the correct answer is:
- **potassium and iodine**.