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Chloride gas is usually collected by downward delivery after preparation because chlorine gas is

A. soluble in water
B. denser than water
c. less dense than air
d. very reactive ​

1 Answer

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D- Extremely Reactive... a strong oxidising agent: among the elements, it has the highest electron affinity and the third-highest electronegativity on the Pauling scale, behind only oxygen and fluorine.
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