Answer:
The reactivity of metal is determined by the reactivity series. ... The metal which easily displaced aluminium will lie above in the series but that same element cannot displace sodium, so it will lie below in the series. Hence, from the series, we conclude that the unknown metal could be calcium or magnesium.
Explanation:
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Halogen are the most reactive due to their electronic configuration
It’s B. Chromium(III) oxide
Answer:
The same kind of coffee, the same coffee maker, the same amount and type of water, and the same electrical sources were used.
Explanation:
