Waec Model Questions Vol1 2017 Chemistry Question 2

Practice practical question 2 from the 2017 Waec Model Questions Vol1 Chemistry examination. This question covers Periodic Table .

Waec Model Questions Vol1 2017 Chemistry Practical

Topic: Periodic Table

Question 2 WAEC_MODEL_QUESTIONS_VOL1 • 2017 • CHEMISTRY • practical

During a laboratory session the following first‑ionisation‑energy data (in kJ mol⁻¹) for the elements of period 2 were recorded: Li : 520 Be : 899 B : 801 C : 1086 N : 1402 O : 1314 F : 1681 Ne : 2080 Using this data answer the questions that follow.

Question Parts

( a )

Calculate the average first ionisation energy of the eight elements.

( b )

Identify the element with the highest first ionisation energy and give its value.

( c )

Explain the overall trend in ionisation energy across period 2, referring to electronic configuration where appropriate.

( d )

Based on the periodic trend, estimate the first ionisation energy of sodium (Na) and justify your estimate.

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About This Question

This is Waec Model Questions Vol1 2017 Chemistry Question 2. It is one of the practical questions from the 2017 Waec Model Questions Vol1 Chemistry examination.

The question covers Periodic Table .

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