MCQEasy1 mark
1
Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)
The diagram given below shows the bonding in the covalent molecule AB₂. Which option represents the correct electronic configuration of atoms A and B before combining together to form the above molecule?
Topic: Chemical bonding and electron structures
Previous-year question practice database
Answer
Exam answer
(d) A: 2,6 and B: 2,8,7.
Explanation
A needs two electrons and each B needs one, giving AB₂ with two single covalent bonds.
In words
A: 2,6 and B: 2,8,7.
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