Identify the correct statement:
Correct answer: D. Elemental Na is easily oxidizing
- A. Element sodium can be prepared and isolated by electrolyzing an aqueous solution of NaCl
- B. Elemental Na is a strong oxidizing agent
- C. Elemental Na is insoluble in NH3
- D. Elemental Na is easily oxidizing
Explanation
Good reducing agents include the active metals, such as sodium, magnesium, aluminum, and zinc, which have relatively small ionization energies and low electro-negativities.
This question appeared on the NUMS 2014 paper, which you can sit online with every answer explained.
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About Reactions of Group I Elements
Group I elements have one valence electron, so their reactivity increases down the group as ionisation energy decreases. Their reactions with water, oxygen, hydrogen and halogens produce hydroxides, oxides, hydrides and halides, while the behaviour of lithium differs from the heavier metals because of its small ionic size.
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