Waec Model Questions Vol1 2017 Chemistry Question 31
Practice objective / multiple choice question 31 from the 2017 Waec Model Questions Vol1 Chemistry examination.
An element has atomic number 15. Its ground‑state electron configuration is 1s² 2s² 2p⁶ 3s² 3p³. How many valence electrons does the element possess?
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About This Question
This is Waec Model Questions Vol1 2017 Chemistry Question 31. It is one of the objective questions from the 2017 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Easy .
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