Answer
Carbon
Work Step by Step
There are no lone pairs and four single-bonded atoms, giving a total of 4 valence electrons. Thus, we need to pick a group 4 element. For this reason, Carbon is a good choice.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.