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Reaction of Acids with Metals

Why cesium an...

Question

Why cesium and rubidium are not placed in reactivity series even though they are more reactive den sodium n potassium??

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Solution

These elements are rare and are not well known. That is why not included in the reactivity series.

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Q. Give reasons for the following:
(i) Sodium is more reactive than aluminium.
(ii) Mercury is not the only metallic liquid at around 30 C.
(iii) Metals always combine by electrovalency.
(iv) Metal ions are always positively charged.
(v) Metal ions always get discharged at the cathode during electrolysis.
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(vii) Metals are always monoatomic.
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(x) Hydrogen is not a metal but it has been assigned a place in the reactivity series of metals.

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