Question detail
Which of the following pairs of elements would most likely form an ionic compound?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Chemical bonds, ionic, covalent and metallic
Question
- A. Sodium and chlorine
- B. Carbon and oxygen
- C. Hydrogen and nitrogen
- D. Bromine and iodine
Answer
The correct option is Sodium and chlorine. This answer is correct because it matches the approved learning objective to draw dot and cross diagrams for ionic compounds formed from Group 1 or Group 2 metals with Group 6 or Group 7 non-metals in the subtopic Ionic bonding.
Explanation
The correct option is Sodium and chlorine. Sodium and chlorine is correct because it directly supports the approved learning objective to draw dot and cross diagrams for ionic compounds formed from Group 1 or Group 2 metals with Group 6 or Group 7 non-metals. This belongs to the subtopic Ionic bonding within Chemical bonds, ionic, covalent and metallic, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from Ionic bonding.
Common mistake
Misplacing Electrons in Dot and Cross Diagrams
Students often place the electrons incorrectly in dot and cross diagrams, failing to show the correct transfer of electrons from the metal to the non-metal.
To fix this, students should carefully identify which atom is the metal and which is the non-metal, ensuring that the metal atom's outer-shell electrons are shown as crosses and the non-metal's as dots, accurately representing the electron transfer.
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