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Standard IX

Chemistry

Similarity and Difference of Hydrogen with Alkali Metals

In what respe...

Question

In what respect does hydrogen differ from :

(i) alkali metals (ii) halogens ?

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Solution

(i)With respect to alkali metals
Hydrogen is placed in IA group which should contain metallic elements but hydrogen is an non metal.

(ii)With respect to halogens
Hydrogen losses electron to form cations but halogens gains electrons to form anions

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Similar questions

Q. In which of the properties listed below, hydrogen does not show similarity with halogens?

I .

Nature of the oxide

I I .

Electropositive character

I I I .

Combination with alkali metals

I V .

Atomicity

Q. Hydrogen exhibits the properties similar to both alkali metals and halogens.

Q. In which of the properties listed below, hydrogen does not show similarity with halogens ?
I. Nature of the oxide
II. Electropositive character
III. Combination with alkali metals
IV. Atomicity

In which of the following properties listed below of hydrogen does not show similarity with halogens?

(i)Nature of the oxide

(ii)Electropositive character

(iii)Combination with alkali

(iv)Atomicity

Question 2

Why does $H^{+}$ ion always get associated with other atom or molecules?

(a) Ionisation enthalpy of hydrogen resembles that of alkali metals.

(b) Its reactivity is similar to halogens

(d) Loss of an electron from hydrogen atom results in a nucleus of very small size as compare to other or ions. Due to small size it cannot exist free.

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Standard IX Chemistry

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In what respect does hydrogen differ from : (i) alkali metals (ii) halogens ?

(i)With respect to alkali metals Hydrogen is placed in IA group which should contain metallic elements but hydrogen is an non metal. (ii)With respect to halogens Hydrogen losses electron to form cations but halogens gains electrons to form anions

In what respect does hydrogen differ from :

(i) alkali metals (ii) halogens ?

(i)With respect to alkali metals
Hydrogen is placed in IA group which should contain metallic elements but hydrogen is an non metal.

(ii)With respect to halogens
Hydrogen losses electron to form cations but halogens gains electrons to form anions