Question

what change occur in the reactivity of metals and the nature of their oxides on moving from top to bottom in a group.​

Answer 1

Answer:

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Explanation:

Answer 2

Explanation:

Reactivity increases as you go down the group; the less reactive metals (lithium, sodium and potassium) are stored in oil (because of its density, lithium floats in oil, but because it is less reactive than the other metals in the group, the thin coating of oil that results is sufficient to prevent reaction).