Waec Model Questions Vol1 2022 Chemistry Question 2

Practice essay / theory question 2 from the 2022 Waec Model Questions Vol1 Chemistry examination. This question covers Periodic table, Trends in atomic properties .

Waec Model Questions Vol1 2022 Chemistry Essay / Theory
Topics: Periodic table Trends in atomic properties
Question 2 WAEC_MODEL_QUESTIONS_VOL1 • 2022 • CHEMISTRY • essay

The diagram presents a section of the periodic table covering periods 2 and 3 with the symbols and atomic numbers of the elements.

Question Parts

( a )
State the atomic number and symbol of the element that is in period 3, group 2.
( b )
The diagram indicates that the atomic radius of the element in period 2, group 17 is 100 pm and that of the element in period 3, group 17 is 110 pm. Calculate the percentage increase in atomic radius when moving down this group.
( c )
Explain why the ionisation energy of the element in period 3, group 2 is lower than that of the element in period 2, group 2, using periodic trends.

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About This Question

This is Waec Model Questions Vol1 2022 Chemistry Question 2. It is one of the essay questions from the 2022 Waec Model Questions Vol1 Chemistry examination.

The question covers Periodic table, Trends in atomic properties .

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