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A nuclide is represented by \(_{32}^{70}B\). Determine its neutron-proton ratio

Physics
WAEC 2018

A nuclide is represented by \(_{32}^{70}B\). Determine its neutron-proton ratio

  • A. 0.5
  • B. 0.8
  • C. 1.2
  • D. 1.5
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Correct Answer: Option C
Explanation

The element B has a mass number of 70 with atomic number 32. Hence, B has 32 protons and (70-32) = 38 neutrons.

The neutron- proton ratio is 38:32 = \(\frac{38}{32} = 1.1875\)

\(\approxeq 1.2\)

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WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
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
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