Select the correct statements:

Moderate

A

Based on reactivity series, occurrence of certain elements takes place in native state
B

Due to the basic nature of oxides of alkaline earth metals, they combine with atmospheric acidic oxides giving salts
C

Based on reactivity series, occurrence of certain elements takes place in atomic state
D

extraction from minerals is more economical than ores

Solution

reactivity series explains the order of reaction of metals with respect to each other

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