Waec Model Questions Vol1 2024 Chemistry Question 1

Practice essay / theory question 1 from the 2024 Waec Model Questions Vol1 Chemistry examination. This question covers Atomic Structure .

Waec Model Questions Vol1 2024 Chemistry Essay / Theory
Topic: Atomic Structure
Question 1 WAEC_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • essay
Waec Model Questions Vol1 2024 Chemistry Question 1 diagram

The diagram shows a model of an atom of an unknown element. The nucleus contains 15 protons and 16 neutrons. The electron shells are labelled K, L and M and contain 2, 8 and 5 electrons respectively.

Question Parts

( a )
Identify the element represented by the atom.
( b )
Write the ground‑state electron configuration of the element using the Aufbau principle.
( c )
Calculate the number of neutrons present in the nucleus.
( d )
Explain, on the basis of its electron arrangement, why this element is likely to gain three electrons when it forms compounds.

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About This Question

This is Waec Model Questions Vol1 2024 Chemistry Question 1. It is one of the essay questions from the 2024 Waec Model Questions Vol1 Chemistry examination.

The question covers Atomic Structure .

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