Igcse Model Questions Vol1 2021 Chemistry Question 1

Practice essay / theory question 1 from the 2021 Igcse Model Questions Vol1 Chemistry examination. This question covers Atomic structure, Electronic configuration, Ions .

Igcse Model Questions Vol1 2021 Chemistry Essay / Theory
Topics: Atomic structure Electronic configuration Ions
Question 1 IGCSE_MODEL_QUESTIONS_VOL1 • 2021 • CHEMISTRY • essay
Igcse Model Questions Vol1 2021 Chemistry Question 1 diagram

The diagram shows a neutral lithium atom (Li) with its nucleus and electron shells labelled.

Question Parts

( a )
Write the ground‑state electron configuration of the atom using the notation 1s, 2s, etc.
( b )
Determine the mass number of the most abundant isotope shown and explain how you obtained it.
( c )
Using its position in the periodic table, explain why lithium behaves as a metal.
( d )
When lithium forms a cation, write the charge on the ion, give its electron configuration and state how many electrons are now in each shell.

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About This Question

This is Igcse Model Questions Vol1 2021 Chemistry Question 1. It is one of the essay questions from the 2021 Igcse Model Questions Vol1 Chemistry examination.

The question covers Atomic structure, Electronic configuration, Ions .

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