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Introduction

Hydrogen is n...

Question

Hydrogen is not a metal but it has been assigned aplace in the reactivity series of metals.Explain.

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Solution

Despite not being a metal, hydrogen has been assigned a place in the reactivity series of metals because, hydrogen has a tendency to loose electrons and get converted to $H^{+}$ ion which is similar to the property exhibited by metals

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Q. Hydrogen is not a metal-but it has been assigned a place in the reactivity series of metals. Give the reason for it.

Q. Hydrogen is not a metal but it has been assigned a place in the reactivity series. why?

Q. (a) What is meant by the reactivity series of metals? Arrange the following metals in an increasing order of their reactivities towards water:
Zinc, Iron, Magnesium, Sodium
(b) Hydrogen is not a metal but still it has been assigned a place in the reactivity series of metals. Why?
(c) Name one metal more reactive and another less reactive than hydrogen.
(d) Name one metal which displaces copper from copper sulphate solution and one which does not.
(e) Name one metal which displaces silver from silver nitrate solution and one which does not.

Q. Hydrogen is a non-metal but it is placed in reactivity series of metal. Why?

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.
(vi) Metals generally do not form hydrides.
(vii) Metals are always monoatomic.
(viii) Sodium and potassium cannot be kept exposed to air.
(ix) Sodium and potassium should not be treated with acids.
(x) Hydrogen is not a metal but it has been assigned a place in the reactivity series of metals.

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