Neco 2020 Chemistry Question 2

Practice essay / theory question 2 from the 2020 Neco Chemistry examination. This question covers Periodic Table, Periodic Trends, Electronic Configuration .

Neco 2020 Chemistry Essay / Theory

Topics: Periodic Table Periodic Trends Electronic Configuration

Question 2 NECO • 2020 • CHEMISTRY • essay

The diagram presents a portion of the periodic table covering periods 2 and 3 and groups 1, 2, 13, 14, 15, and 16. The elements are shown with their atomic numbers and standard symbols.

Question Parts

( a )

Identify the element that lies in period 3, group 15 and write its electronic configuration up to the valence shell.

( b )

Using the data from the diagram, compare the atomic radius of the element in period 2, group 1 with that of the element in period 3, group 1. Explain the observed trend.

( c )

The diagram shows that the ionisation energy of the element in period 3, group 16 is higher than that of the element in period 2, group 16. Provide a reason for this observation.

( d )

Predict the type of oxide (acidic, basic or amphoteric) formed by the element in period 2, group 13 and justify your answer using periodic trends.

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About This Question

This is Neco 2020 Chemistry Question 2. It is one of the essay questions from the 2020 Neco Chemistry examination.

The question covers Periodic Table, Periodic Trends, Electronic Configuration .

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