Gce Model Questions Vol1 2024 Chemistry Question 1

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

Gce Model Questions Vol1 2024 Chemistry Essay / Theory
Topic: Atomic Structure
Question 1 GCE_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • essay
Gce Model Questions Vol1 2024 Chemistry Question 1 diagram

The diagram shows a phosphorus atom (atomic number 15, mass number 31) with its nucleus and three electron shells labelled K, L and M.

Question Parts

( a )
State the number of protons, neutrons and electrons present in a neutral phosphorus atom.
( b )
Write the full electron configuration of phosphorus using the notation 1s² 2s² 2p⁶ 3s² 3p³.
( c )
Phosphorus commonly forms a P³⁻ ion. Explain, with reference to the diagram, how the ion is formed and calculate the new number of electrons and the overall charge on the ion.
( d )
A natural sample of phosphorus contains 95 % ^31P and 5 % ^32P (mass numbers 31 and 32 respectively). Using the diagram, calculate the average atomic mass of the sample.

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About This Question

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

The question covers Atomic Structure .

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