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How many valence electrons are contained in the element \(^{31}_{15}P\)?

Chemistry
JAMB 2020

How many valence electrons are contained in the element \(^{31}_{15}P\)?

  • A. 3
  • B. 4
  • C. 15
  • D. 31
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Correct Answer: Option A
Explanation

The element is Phosphorus in group 5 with valencies of 3 and 5.

There is an explanation video available below.

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Explanation Video

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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free