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Introduction to Imperfections in Solids

Which of the ...

Question

Which of the following does not illustrate the anomalous properties of lithium

A

The melting point and boiling point of Li are comparatively high

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B

Li is much softer than the other group I metals

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C

Li forms a nitride Li₃N unlike group I metals

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D

The ion of Li and its compounds are more heavily hydrated than those of the rest of the group

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Solution

The correct option is B
Li is much softer than the other group I metals

Li is much softer than the other group I metals. Actually Li is harder then other alkali metals

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Similar questions

Q. Assertion :The lithium-ion itself, and also its compounds, are more heavily hydrated than those of the rest of the group members. Reason: The

L i^{+}

is smallest among alkali metals and polarise water molecules more easily than the other alkali metal ions.

Q. Consider the following statements :
(I)

C s^{+}

ion is more highly hydrated than other alkali metal ions.
(II) Among the alkali metals

L i, N a, K,

R b, L i

has the higher melting point.
(III) Among the alkali metals, only

L i

forms a stable nitride by direct combination.

Q. Consider the following statements:
1.

C s^{+}

is more highly hydrated than the other alkali metal ions.
2. Among the alkali metals

L i, N a, K

R b

, lithium has the highest melting point.
3. Among the alkali metals only lithium forms a stable nitride by direct combination.
Out of these statements:

Q. Which of the following does not illustrate the anomalous properties of

L i

?

Q. Explain:
(i) Larger the atomic size, more metallic is the element.
(ii) Halogens have high electron affinity.
(iii) Size of atom changes when it loses or gain electron.
(iv) K is more reactive than Li.
(v) Electronegativity of Cl is higher than S.
(vi) Group 17 elements are non-metals, while group 1 elements are metals.

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