Neco Model Questions Vol1 2017 Chemistry Question 2

Practice essay / theory question 2 from the 2017 Neco Model Questions Vol1 Chemistry examination. This question covers Periodic Table, Periodic trends, Chemical bonding .

Neco Model Questions Vol1 2017 Chemistry Essay / Theory
Topics: Periodic Table Periodic trends Chemical bonding
Question 2 NECO_MODEL_QUESTIONS_VOL1 • 2017 • CHEMISTRY • essay

The illustration presents a portion of the periodic table covering periods 1 to 3 and groups 1, 2 and 13–18. For each element shown, the atomic number, symbol and, where indicated, the atomic radius (in picometres) are given.

Question Parts

( a )
Identify the period and group of chlorine and describe two general chemical properties of elements in this group.
( b )
The diagram gives the atomic radii of sodium (186 pm) and chlorine (99 pm). Explain, using periodic trends, why the radius of chlorine is smaller than that of sodium even though both belong to the same period.
( c )
Predict the type of bond formed when magnesium reacts with chlorine and write the chemical formula of the compound produced. Justify your answer using the oxidation states inferred from the periodic table.
( d )
Both magnesium and aluminium are in period 3. Using periodic trends, explain why magnesium metal reacts more vigorously with dilute hydrochloric acid than aluminium does, even though both can produce hydrogen gas.

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About This Question

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

The question covers Periodic Table, Periodic trends, Chemical bonding .

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