Chemistry
Justify the following statements:
(a) As one moves down a group, the reducing property of elements increases.
(b) Aluminium oxide cannot be reduced by carbon monoxide.
Periodic Table
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Answer
(a) Reducing property means the tendency to lose electrons, On moving down a group atomic size increases. Outer electrons are farther from the nucleus and less strongly attracted. Hence, as we move down the group elements lose electrons more readily, making them stronger reducing agents.
(b) Aluminium oxide is highly stable and aluminium has a greater affinity for oxygen than carbon, so CO is not strong enough to reduce Al2O3.
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