Neco Model Questions Vol1 2024 Chemistry Question 2

Practice essay / theory question 2 from the 2024 Neco Model Questions Vol1 Chemistry examination. This question covers Periodic Table, Electronic Configuration, Periodic Trends .

Neco Model Questions Vol1 2024 Chemistry Essay / Theory

Topics: Periodic Table Electronic Configuration Periodic Trends

Question 2 NECO_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • essay

The diagram shows a portion of the periodic table containing the elements of period 3 that belong to groups 1, 2 and 17.

Question Parts

( a )

State the group number and period number for each of the three elements shown in the diagram.

( b )

Write the ground‑state electron configuration for each element using the Aufbau principle.

( c )

Compare the first ionisation energies of the three elements and explain the observed trend based on their positions in the periodic table.

( d )

State which of the three elements would most readily form a +1 cation, a +2 cation and a –1 anion in ionic compounds. Write the formula of a typical ionic compound each would form with chlorine.

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About This Question

This is Neco Model Questions Vol1 2024 Chemistry Question 2. It is one of the essay questions from the 2024 Neco Model Questions Vol1 Chemistry examination.

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

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